Table of Contents
Section 1 Endpoint Detection and Response (EDR) Solutions Product Definition
Section 2Global Endpoint Detection and Response (EDR) Solutions Market Manufacturer Share and Market Overview
2.1Global Manufacturer Endpoint Detection and Response (EDR) Solutions Shipments
2.2Global Manufacturer Endpoint Detection and Response (EDR) Solutions Business Revenue
2.3Global Endpoint Detection and Response (EDR) Solutions Market Overview
Section 3 Manufacturer Endpoint Detection and Response (EDR) Solutions Business Introduction
3.1 Symantec Endpoint Detection and Response (EDR) Solutions Business Introduction
3.1.1 Symantec Endpoint Detection and Response (EDR) Solutions Shipments, Price, Revenue and Gross profit 2014-2018
3.1.2 Symantec Endpoint Detection and Response (EDR) Solutions Business Distribution by Region
3.1.3 Symantec Interview Record
3.1.4 Symantec Endpoint Detection and Response (EDR) Solutions Business Profile
3.1.5 Symantec Endpoint Detection and Response (EDR) Solutions Product Specification
3.2 Dell RSA Security Endpoint Detection and Response (EDR) Solutions Business Introduction
3.2.1 Dell RSA Security Endpoint Detection and Response (EDR) Solutions Shipments, Price, Revenue and Gross profit 2014-2018
3.2.2 Dell RSA Security Endpoint Detection and Response (EDR) Solutions Business Distribution by Region
3.2.3 Interview Record
3.2.4 Dell RSA Security Endpoint Detection and Response (EDR) Solutions Business Overview
3.2.5 Dell RSA Security Endpoint Detection and Response (EDR) Solutions Product Specification
3.3 McAfee Endpoint Detection and Response (EDR) Solutions Business Introduction
3.3.1 McAfee Endpoint Detection and Response (EDR) Solutions Shipments, Price, Revenue and Gross profit 2014-2018
3.3.2 McAfee Endpoint Detection and Response (EDR) Solutions Business Distribution by Region
3.3.3 Interview Record
3.3.4 McAfee Endpoint Detection and Response (EDR) Solutions Business Overview
3.3.5 McAfee Endpoint Detection and Response (EDR) Solutions Product Specification
3.4 FireEye Endpoint Detection and Response (EDR) Solutions Business Introduction
3.4.1 FireEye Endpoint Detection and Response (EDR) Solutions Shipments, Price, Revenue and Gross profit 2014-2018
3.4.2 FireEye Endpoint Detection and Response (EDR) Solutions Business Distribution by Region
3.4.3 Interview Record
3.4.4 FireEye Endpoint Detection and Response (EDR) Solutions Business Overview
3.4.5 FireEye Endpoint Detection and Response (EDR) Solutions Product Specification
3.5 Carbon Black Endpoint Detection and Response (EDR) Solutions Business Introduction
3.5.1 Carbon Black Endpoint Detection and Response (EDR) Solutions Shipments, Price, Revenue and Gross profit 2014-2018
3.5.2 Carbon Black Endpoint Detection and Response (EDR) Solutions Business Distribution by Region
3.5.3 Interview Record
3.5.4 Carbon Black Endpoint Detection and Response (EDR) Solutions Business Overview
3.5.5 Carbon Black Endpoint Detection and Response (EDR) Solutions Product Specification
Section 4Global Endpoint Detection and Response (EDR) Solutions Market Segmentation (Region Level)
4.1North America Country
4.1.1 United States Endpoint Detection and Response (EDR) Solutions Market Size and Price Analysis 2014-2018
4.1.2 Canada Endpoint Detection and Response (EDR) Solutions Market Size and Price Analysis 2014-2018
4.1.3North America Endpoint Detection and Response (EDR) Solutions Market Size and Price Analysis 2014-2018
4.2South America Country
4.2.1South America Endpoint Detection and Response (EDR) Solutions Market Size and Price Analysis 2014-2018
4.3Asia Country
4.3.1 China Endpoint Detection and Response (EDR) Solutions Market Size and Price Analysis 2014-2018
4.3.2Japan Endpoint Detection and Response (EDR) Solutions Market Size and Price Analysis 2014-2018
4.3.3India Endpoint Detection and Response (EDR) Solutions Market Size and Price Analysis 2014-2018
4.3.4 Korea Endpoint Detection and Response (EDR) Solutions Market Size and Price Analysis 2014-2018
4.3.5SoutheastAsia Endpoint Detection and Response (EDR) Solutions Market Size and Price Analysis 2014-2018
4.3.6Asia Endpoint Detection and Response (EDR) Solutions Market Size and Price Analysis 2014-2018
4.4Europe Country
4.4.1 Germany Endpoint Detection and Response (EDR) Solutions Market Size and Price Analysis 2014-2018
4.4.2 UK Endpoint Detection and Response (EDR) Solutions Market Size and Price Analysis 2014-2018
4.4.3 France Endpoint Detection and Response (EDR) Solutions Market Size and Price Analysis 2014-2018
4.4.4 Russia Endpoint Detection and Response (EDR) Solutions Market Size and Price Analysis 2014-2018
4.4.5Europe Endpoint Detection and Response (EDR) Solutions Market Size and Price Analysis 2014-2018
4.5 Africa Country
4.2.1 Africa Endpoint Detection and Response (EDR) Solutions Market Size and Price Analysis 2014-2018
4.6 Other Country and Region
4.6.1Middle East Endpoint Detection and Response (EDR) Solutions Market Size and Price Analysis 2014-2018
4.6.2GCC Endpoint Detection and Response (EDR) Solutions Market Size and Price Analysis 2014-2018
4.7Global Endpoint Detection and Response (EDR) Solutions Market Segmentation (Region Level) Analysis 2014-2018
4.7Global Endpoint Detection and Response (EDR) Solutions Market Segmentation (Region Level) Analysis
Section 5Global Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level)
5.1Global Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Market Size 2014-2018
5.2 Different Endpoint Detection and Response (EDR) Solutions Product Type Price 2014-2018
5.3Global Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Analysis
Section 6Global Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level)
6.1Global Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Market Size 2014-2018
6.2 Different Industry Price 2014-2018
6.3Global Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Analysis
Section 7Global Endpoint Detection and Response (EDR) Solutions Market Segmentation (Channel Level)
7.1Global Endpoint Detection and Response (EDR) Solutions Market Segmentation (Channel Level) Sales Volume and Share 2014-2018
7.2Global Endpoint Detection and Response (EDR) Solutions Market Segmentation (Channel Level) Analysis
Section 8 Endpoint Detection and Response (EDR) Solutions Market Forecast 2018-2023
8.1 Endpoint Detection and Response (EDR) Solutions Segmentation Market Forecast (Region Level)
8.2 Endpoint Detection and Response (EDR) Solutions Segmentation Market Forecast (Product Type Level)
8.3 Endpoint Detection and Response (EDR) Solutions Segmentation Market Forecast (Industry Level)
8.4 Endpoint Detection and Response (EDR) Solutions Segmentation Market Forecast (Channel Level)
Section 9 Endpoint Detection and Response (EDR) Solutions Segmentation Product Type
9.1 Cloud-based Product Introduction
9.2 On-premise Product Introduction
Section 10 Endpoint Detection and Response (EDR) Solutions Segmentation Industry
10.1 Large Enterprises Clients
10.2 SMEs Clients
Section 11 Endpoint Detection and Response (EDR) Solutions Cost of Production Analysis
11.1 Raw Material Cost Analysis
11.2 Technology Cost Analysis
11.3 Labor Cost Analysis
11.4 Cost Overview
Section 12 Conclusion
13 Methodology and Data Source
13.1 Methodology/Research Approach
13.1.1 Research Programs/Design
13.1.2 Market Size Estimation
13.1.3 Market Breakdown and Data Triangulation
13.2 Data Source
13.2.1 Secondary Sources
13.2.2 Primary Sources
13.3 Disclaimer



Chart and Figure
Figure Endpoint Detection and Response (EDR) Solutions Product Picture from Symantec
Chart 2014-2018Global Manufacturer Endpoint Detection and Response (EDR) Solutions Shipments (Units)
Chart 2014-2018Global Manufacturer Endpoint Detection and Response (EDR) Solutions Shipments Share
Chart 2014Global Manufacturer Endpoint Detection and Response (EDR) Solutions Shipments Share
Chart 2015Global Manufacturer Endpoint Detection and Response (EDR) Solutions Shipments Share
Chart 2016Global Manufacturer Endpoint Detection and Response (EDR) Solutions Shipments Share
Chart 2017Global Manufacturer Endpoint Detection and Response (EDR) Solutions Shipments Share
Chart 2018Global Manufacturer Endpoint Detection and Response (EDR) Solutions Shipments Share
Chart 2014-2018Global Manufacturer Endpoint Detection and Response (EDR) Solutions Business Revenue (Million USD)
Chart 2014-2018Global Manufacturer Endpoint Detection and Response (EDR) Solutions Business Revenue Share
Chart 2014Global Manufacturer Endpoint Detection and Response (EDR) Solutions Business Revenue Share
Chart 2015Global Manufacturer Endpoint Detection and Response (EDR) Solutions Business Revenue Share
Chart 2016Global Manufacturer Endpoint Detection and Response (EDR) Solutions Business Revenue Share
Chart 2017Global Manufacturer Endpoint Detection and Response (EDR) Solutions Business Revenue Share
Chart 2018Global Manufacturer Endpoint Detection and Response (EDR) Solutions Business Revenue Share
Chart Symantec Endpoint Detection and Response (EDR) Solutions Shipments, Price, Revenue and Gross profit 2014-2018
Chart Symantec Endpoint Detection and Response (EDR) Solutions Business Distribution
Chart Symantec Interview Record (Partly)
Chart Symantec Endpoint Detection and Response (EDR) Solutions Business Profile
Table Symantec Endpoint Detection and Response (EDR) Solutions Product Specification
Chart Dell RSA Security Endpoint Detection and Response (EDR) Solutions Shipments, Price, Revenue and Gross profit 2014-2018
Chart Dell RSA Security Endpoint Detection and Response (EDR) Solutions Business Distribution
Chart Dell RSA Security Interview Record (Partly)
Chart Dell RSA Security Endpoint Detection and Response (EDR) Solutions Business Overview
Table Dell RSA Security Endpoint Detection and Response (EDR) Solutions Product Specification
Chart McAfee Endpoint Detection and Response (EDR) Solutions Shipments, Price, Revenue and Gross profit 2014-2018
Chart McAfee Endpoint Detection and Response (EDR) Solutions Business Distribution
Chart McAfee Interview Record (Partly)
Chart McAfee Endpoint Detection and Response (EDR) Solutions Business Overview
Table McAfee Endpoint Detection and Response (EDR) Solutions Product Specification
Chart FireEye Endpoint Detection and Response (EDR) Solutions Shipments, Price, Revenue and Gross profit 2014-2018
Chart FireEye Endpoint Detection and Response (EDR) Solutions Business Distribution
Chart FireEye Interview Record (Partly)
Chart FireEye Endpoint Detection and Response (EDR) Solutions Business Overview
Table FireEye Endpoint Detection and Response (EDR) Solutions Product Specification
Chart Carbon Black Endpoint Detection and Response (EDR) Solutions Shipments, Price, Revenue and Gross profit 2014-2018
Chart Carbon Black Endpoint Detection and Response (EDR) Solutions Business Distribution
Chart Carbon Black Interview Record (Partly)
Chart Carbon Black Endpoint Detection and Response (EDR) Solutions Business Overview
Table Carbon Black Endpoint Detection and Response (EDR) Solutions Product Specification
Chart United States Endpoint Detection and Response (EDR) Solutions Sales Volume (Units) and Market Size (Million $) 2014-2018
Chart United States Endpoint Detection and Response (EDR) Solutions Sales Price (USD/Unit) 2014-2018
Chart Canada Endpoint Detection and Response (EDR) Solutions Sales Volume (Units) and Market Size (Million $) 2014-2018
Chart Canada Endpoint Detection and Response (EDR) Solutions Sales Price (USD/Unit) 2014-2018
ChartNorth America Endpoint Detection and Response (EDR) Solutions Sales Volume (Units) and Market Size (Million $) 2014-2018
ChartNorth America Endpoint Detection and Response (EDR) Solutions Sales Price (USD/Unit) 2014-2018
ChartSouth America Endpoint Detection and Response (EDR) Solutions Sales Volume (Units) and Market Size (Million $) 2014-2018
ChartSouth America Endpoint Detection and Response (EDR) Solutions Sales Price (USD/Unit) 2014-2018
Chart China Endpoint Detection and Response (EDR) Solutions Sales Volume (Units) and Market Size (Million $) 2014-2018
Chart China Endpoint Detection and Response (EDR) Solutions Sales Price (USD/Unit) 2014-2018
ChartJapan Endpoint Detection and Response (EDR) Solutions Sales Volume (Units) and Market Size (Million $) 2014-2018
ChartJapan Endpoint Detection and Response (EDR) Solutions Sales Price (USD/Unit) 2014-2018
ChartIndia Endpoint Detection and Response (EDR) Solutions Sales Volume (Units) and Market Size (Million $) 2014-2018
ChartIndia Endpoint Detection and Response (EDR) Solutions Sales Price (USD/Unit) 2014-2018
Chart Korea Endpoint Detection and Response (EDR) Solutions Sales Volume (Units) and Market Size (Million $) 2014-2018
Chart Korea Endpoint Detection and Response (EDR) Solutions Sales Price (USD/Unit) 2014-2018
ChartSoutheastAsia Endpoint Detection and Response (EDR) Solutions Sales Volume (Units) and Market Size (Million $) 2014-2018
ChartSoutheastAsia Endpoint Detection and Response (EDR) Solutions Sales Price (USD/Unit) 2014-2018
ChartAsia Endpoint Detection and Response (EDR) Solutions Sales Volume (Units) and Market Size (Million $) 2014-2018
ChartAsia Endpoint Detection and Response (EDR) Solutions Sales Price (USD/Unit) 2014-2018
Chart Germany Endpoint Detection and Response (EDR) Solutions Sales Volume (Units) and Market Size (Million $) 2014-2018
Chart Germany Endpoint Detection and Response (EDR) Solutions Sales Price (USD/Unit) 2014-2018
Chart UK Endpoint Detection and Response (EDR) Solutions Sales Volume (Units) and Market Size (Million $) 2014-2018
Chart UK Endpoint Detection and Response (EDR) Solutions Sales Price (USD/Unit) 2014-2018
Chart France Endpoint Detection and Response (EDR) Solutions Sales Volume (Units) and Market Size (Million $) 2014-2018
Chart France Endpoint Detection and Response (EDR) Solutions Sales Price (USD/Unit) 2014-2018
Chart Russia Endpoint Detection and Response (EDR) Solutions Sales Volume (Units) and Market Size (Million $) 2014-2018
Chart Russia Endpoint Detection and Response (EDR) Solutions Sales Price (USD/Unit) 2014-2018
ChartEurope Endpoint Detection and Response (EDR) Solutions Sales Volume (Units) and Market Size (Million $) 2014-2018
ChartEurope Endpoint Detection and Response (EDR) Solutions Sales Price (USD/Unit) 2014-2018
Chart Africa Endpoint Detection and Response (EDR) Solutions Sales Volume (Units) and Market Size (Million $) 2014-2018
Chart Africa Endpoint Detection and Response (EDR) Solutions Sales Price (USD/Unit) 2014-2018
ChartMiddle East Endpoint Detection and Response (EDR) Solutions Sales Volume (Units) and Market Size (Million $) 2014-2018
ChartMiddle East Endpoint Detection and Response (EDR) Solutions Sales Price (USD/Unit) 2014-2018
ChartGCC Endpoint Detection and Response (EDR) Solutions Sales Volume (Units) and Market Size (Million $) 2014-2018
ChartGCC Endpoint Detection and Response (EDR) Solutions Sales Price (USD/Unit) 2014-2018
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Region Level) Sales Volume 2014-2018
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Region Level) Sales Volume 2014-2018 Share
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Region Level) Sales Volume 2014 Share
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Region Level) Sales Volume 2015 Share
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Region Level) Sales Volume 2016 Share
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Region Level) Sales Volume 2017 Share
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Region Level) Sales Volume 2018 Share
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Region Level) Market size 2014-2018
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Region Level) Market size 2014-2018 Share
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Region Level) Market size 2014 Share
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Region Level) Market size 2015 Share
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Region Level) Market size 2016 Share
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Region Level) Market size 2017 Share
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Region Level) Market size 2018 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Volume (Units) 2014-2018
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Volume 2014-2018 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Volume 2014 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Volume 2015 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Volume 2016 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Volume 2017 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Volume 2018 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Market Size (Million $) 2014-2018
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Market Size 2014-2018 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Market Size 2014 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Market Size 2015 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Market Size 2016 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Market Size 2017 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Market Size 2018 Share
Chart Different Endpoint Detection and Response (EDR) Solutions Product Type Price ($/Unit) 2014-2018
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Market Size (Volume) 2014-2018
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Market Size (Volume) 2014-2018 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Market Size (Volume) 2014 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Market Size (Volume) 2015 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Market Size (Volume) 2016 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Market Size (Volume) 2017 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Market Size (Volume) 2018 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Market Size (Value) 2014-2018
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Market Size (Value) 2014-2018 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Market Size (Value) 2014 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Market Size (Value) 2015 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Market Size (Value) 2016 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Market Size (Value) 2017 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Market Size (Value) 2018 Share
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Price ($/Unit) 2014-2018
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Channel Level) Sales Volume (Units) 2014-2018
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Channel Level) Share 2014-2018
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Channel Level) Share 2014
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Channel Level) Share 2015
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Channel Level) Share 2016
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Channel Level) Share 2017
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Channel Level) Share 2018
Chart Endpoint Detection and Response (EDR) Solutions Segmentation Market Sales Volume (Unit) Forecast (Region Level) 2018-2023
Chart Endpoint Detection and Response (EDR) Solutions Segmentation Market Sales Volume Forecast (Region Level) Share 2018-2023
Chart Endpoint Detection and Response (EDR) Solutions Segmentation Market Size (Million USD) Forecast (Region Level) 2018-2023
Chart Endpoint Detection and Response (EDR) Solutions Segmentation Market Size Forecast (Region Level) Share 2018-2023
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Volume (Units) 2018-2023
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Volume (Units) Share 2018-2023
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Market Size (Million $) 2018-2023
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Product Type Level) Market Size (Million $) 2018-2023
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Market Size (Volume) 2018-2023
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Market Size (Volume) Share 2018-2023
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Market Size (Value) 2018-2023
Chart Endpoint Detection and Response (EDR) Solutions Market Segmentation (Industry Level) Market Size (Value) Share 2018-2023
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Channel Level) Sales Volume (Units) 2018-2023
ChartGlobal Endpoint Detection and Response (EDR) Solutions Market Segmentation (Channel Level) Share 2018-2023
Chart Cloud-based Product Figure
Chart Cloud-based Product Advantage and Disadvantage Comparison
Chart On-premise Product Figure
Chart On-premise Product Advantage and Disadvantage Comparison
Chart Large Enterprises Clients
Chart SMEs Clients
Table Research Programs/Design for This Report
Figure Bottom-up and Top-down Approaches for This Report
Figure Data Triangulation
Table Key Data Information from Secondary Sources
Table Key Data Information from Primary Sources