Nikodinovska Krstevska, A., J. Ananiev, and S. Stojanovski. “The Ukraine Crisis and New Security Challenges for Euro Atlantic Integrations”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 20, no. 1, Feb. 2015, pp. 254-9, https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/3141.