Gogolewska, Agnieszka. "Transformation of State Security and Intelligence Services in Poland ? A Job Still Unfinished." Connections: The Quarterly Journal 20, no. 1 (2021): 9-32.

Michálek, Lud?k, and Ladislav Pokorný. "Transformation of the Security and Intelligence Services in the Czech Republic." Connections: The Quarterly Journal 18, no. 3 (2019): 65-86.

Stieranka, Jozef, and Martina Binderová. "Transformation of the State Security in the Slovak Republic from 1989 to 1992." Connections: The Quarterly Journal 18, no. 3 (2019): 87-103.

Schissler, Brigadier General Ma. "The Bulgarian Air Force in a New Security Environment." Information & Security: An International Journal 25 (2010): 37-40.

Niemeyer, Klaus. "Transformation: Military and Science." Information & Security: An International Journal 23, no. 2 (2009): 245-258.

Murphy, Robert K., and Richard G. Cathers. "Transparency in Force Modernization Decisions." Information & Security: An International Journal 23, no. 2 (2009): 207-223.

NIKOLOV, Orlin. "CAX, Joint Training and Transformation Objectives." Information & Security: An International Journal 22 (2007): 7-13.

Emmens, Henk. "A NATO Perspective on Challenges and Prospects for the Bulgarian Air Force." Information & Security: An International Journal 21 (2006): 19-26.