Lidia Velkova"Предпоставки и Последици от Мрежовата Корупция."IT4Sec Reports(2015):it4sec_reports_130_0.pdf
Lidia Velkova"Facilitating Factors and Effects of Corruption Networks."IT4Sec Reports(2015):it4sec_reports_130.pdf
Todor Tagarev, Lidia Velkova"Scenarios for Resource Allocation to Bulgaria’s Defense in the Horizon of 2035."Journal of Defense Management4,no. 1(2014):119.
Todor Tagarev, Lidia Velkova"Scenarios for Resource Allocation to Bulgaria’s Defense in the Horizon of 2035."Journal of Defense Management4,no. 1(2014):scenarios-for-resource-allocation-to-bulgarias-defense-in-the-horizon-of-2035-2167-0374.1000119.pdf
Todor Tagarev, Lidia Velkova"Bulgaria’s Defence Policy and Force Size from a Comparative Macro Perspective."Information & Security: An International Journal23,no. 1(2009):115-128.23.10_Tagarev_and_Velkova.pdf