[1] Memorandum written by the deputy commander of Logistics of the National Guards Unit to the commander of the National Guards Unit in 2015 on starting a procedure for selecting a contractor for the preparation and delivery of food to the National Guards Unit.
[2] Memorandum written by the head of the Logistics section of N. Y. Vaptsarov Naval Academy to the commandant of the N. Y. Vaptsarov Naval Academy with a Reg. № 162/20.01.2014 on catering for the cadets at the N. Y. Vaptsarov Naval Academy.
[3] Peycheva, K. Effectiveness of Outsourcing in the Bulgarian Armed Forces - problematic areas”, Almanac 2/2013, National Security and Defence Faculty, G. S. Rakovski Defence College
[4] Peycheva, K. “The Public Sector of Defence and its Interaction with the Private Sector”, report on the scientific conference “Market Development of the Bulgarian Economy - Two Decades after the Change”, 2010, D. A. Tsenov Academy of Economics - Svishtov, p. 212.
[10] Sevdalina Dimitrova, Nikolay Nichev, Nikolay Stefanov. Development оf Outsourcing Services. (2015). International Conference Knowledge-Based Organisation. Volume 21, Issue 1, pp. 192-197
[11] Nichev, N. Theoretical Foundations of Military Logistics - Organisation of Logistical Support. Vasil Levski National Military University, V. Tarnovo, Bulgaria, 2011, p. 140
[13] Terziev, V., Filipov, S., Ninth International Scientific Conference 17-19.6.2016, Durres, Republic of Albania. “Characteristics and Elements of Military Infrastructure”, Volume 13.1., p. 300
[15] Banabakova, V., Sv. Stefanov. State and Development of Logistics Services in Bulgaria. Land Forces Academy Review, Sibiu, Romania, N. 2, 2013, p. 157.
[16] Nichev, N., Petrova, E., Professional Training of Future Logistic Officers at the National Military University of Bulgaria, Sibiu, Romania, The 21st KBO, 2015, pp. 259 ÷ 263.10.1515/kbo-2015-0042