Tagarev, Todor. On Bulgaria?s Defence Policy 2015-2020 In CSDM Views. Sofia: Centre for Security and Defence Management, 2015.

Blakeney, Debbie, Leonard Kerzne, Binyam Solomon, Paul Chouinard, and Andrew Billyard. "Operational Research Tools Supporting the Force Development Process for the Canadian Forces." Information & Security: An International Journal 23, no. 1 (2009): 81-98.