1. OWASP: XSS (Cross Site Scripting) Prevention Cheat Sheet, 12 April 2014.
https://www.owasp.org/index.php/XSS_(Cross_Site_Scripting)_Prevention_Cheat_Sheet
2. Web Application Security Working Group: Content Security Policy 1.1, 11 February 2014.
http://www.w3.org/TR/2014/WD-CSP11-20140211/
3. Dawson, I.: Security Headers on the Top 1,000,000 Websites: March 2014 Report, 19 March 2014.
http://blog.veracode.com/2014/03/security-headers-on-the-top-1000000-websites-march-2014-report/
4. OWASP: XSS Filter Evasion Cheat Sheet, 26 April 2014.
https://www.owasp.org/index.php/XSS_Filter_Evasion_Cheat_sheet
5. Xie, J., Chu, B., Lipford, H.R., Melton, J.T.: ASIDE, p. 267. ACM Press, New York (2011)