Anastasov, P. (2018). The Black Sea region: a critical intersection, https://www.nato.int/docu/review/2018/Also-in-2018/the-black-sea-region-a-critical-intersection-nato-security/EN/index.html, 15.04.2019
Facing Russia’s strategic challenge: Security developments from the Baltic to the Black Sea, http://www.europarl.europa.eu/cmsdata/133503/Facing%20Russia%20strategic%20challenge,%20Security%20developments%20from%20the%20Baltic%20Sea%20to%20the%20Black%20Sea.pdf, 17.04.2019
Ilyin, M. (2008). “Baltic-Black Sea system as a factor of formation of the states in Eastern Europe”. In: Political science, No. 1.
Konobeev, V. (2008). “On the Line of the Rift”. In: Belaruska Dumka, No. 6.
Larsen, S. (1995). “Modelling of Europe in the logic of Rokkan”. In: Polis. Political Research Journal, Vol. 1
Rassoha, L. (2006). “Baltic-Black Sea Partnership”. In: Ukraine and the world today, No. 9 (359).
Shlapak, D., Johnson, M. (2016). Reinforcing deterrence on NATO’s Eastern Flank, https://www.rand.org/content/dam/rand/pubs/research_reports/RR1200/RR1253/RAND_RR1253.pdf , 23.04.2019
Tsimburski, V. (2006). The island of Russia. Geopolitical and Chronological Researches. Moscow: ROSSPEN.