Pavlova, Elitsa. "Implementation of Federated Cyber Ranges  in Bulgarian Universities: Challenges, Requirements, and Opportunities." Information & Security: An International Journal 50, no. 2 (2021): 149-159 .

Tsvetkov, Georgi. Defence Policy of Republic of Bulgaria: Critical Analysis In Security and Defence Management. Vol. 7. Sofia: Procon, 2020.

Kovacheva, Ralitsa. "Hybrid Threats in Bulgarian Media." Information & Security: An International Journal 43, no. 3 (2019): 333-348.

Hadjitodorov, Stefan, and Martin Sokolov. "Blending New-generation Warfare and Soft Power: Hybrid Dimensions of Russia-Bulgaria Relations." Connections: The Quarterly Journal 17, no. 1 (2018): 5-20.

Ratchev, Valeri. Bulgaria?s 2014 Annual Defence Report: Plenty of Data, Low Political Impact In CSDM Views. Sofia: Centre for Security and Defence Management, 2015.

Ratchev, Valeri, Vesselin Petkov, and Todor Tagarev. "Evolving Security Concepts: The Premium on Governance in the Case of Bulgaria." Information & Security: An International Journal 33, no. 2 (2015): 83-107.

Tsvetkov, Georgi. Military-Industrial Complex: How to profit from the National Security In CSDM Views., 2015.

Ratchev, Valeri. NATO?s Partnership for Peace: Twenty Years Later (in Bulgarian) In CSDM Views. Sofia: Centre for Security and Defence Management, 2014.