POIANĂ O. 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 [Internet]. Presa Universitară Clujeană; 2022 [cited 2026 Jun. 10]. Available from: https://editura.ubbcluj.ro/index.php/puc/catalog/book/2680