O. POIANĂ, Eu’s Engagement in the Black Sea Regional Cooperation and the National Preferences of the Riparian States: a Zero Sum Game perpetuated by Energy Insecurity. Presa Universitară Clujeană, 2022. Accessed: May 15, 2026. [Online]. Available: https://editura.ubbcluj.ro/index.php/puc/catalog/book/2680