Shentov, Ognian, Todor Galev, and Ruslan Stefanov. Russian Influence in the Media Sectors of the Black Sea Countries: Tools, Narratives, and Policy Options for Building Resilience. Sofia, Bulgaria: Center for the Study of Democracy, Black Sea Trust for Regional Cooperation and the German Marshall Fund, 2018.

Conley, Heather A., James Mina, Ruslan Stefanov, and Martin Vladimirov. The Kremlin Playbook: Understanding Russian Influence in Central and Eastern Europe. Washington, D.C.: Center for Strategic and International Studies and Rowman & Littlefield, 2016.