http://www.europarl.europa.eu/the-secretary-general/en/secretary_general/strategic_thinking/strategic-2014/strategic-2014-june/strategic_thinking-2014-june-1.html

https://www.amgasparin.wordpress.com
http://www.europarl.europa.eu/the-secretary-general/en/secretary_general/strategic_thinking/strategic-2014/strategic-2014-june/strategic_thinking-2014-june-1.html