Ratchev, Valeri, Uwe Nerlich, and Todor Tagarev. Context Scenarios and Alternative Future EU Roles as a Global Security Actor In It4Sec Reports. Sofia: Institute of Information and Communication Technologies, 2012.

Ratchev, Valeri, Todor Tagarev, and Uwe Nerlich. Towards the exploration of future EU roles as a global security actor In IT4Sec Reports. Sofia: Institute of Information and Communication Technologies, 2011.