Nevena Jovanović, Security and Legal Framework of Prohibition of the Participation of Serbian Citizens in Armed Conflict in a Foreign Country, Proceedings of the International conference "Geopolitical and Security Challenges in Southeastern Europe", May 23, 2019, Ed. D. Stanar, M. Stojadinović, Center for Strategic Forecast, Belgrade, 2019. ISBN – 978-86-900504-2-0