Budiman NAS, Ramadhan I. Defining European Union’s Energy Security from the Perspective of 4A (Availability, Accessibility, Acceptability, Affordability) as an Impact from Russia-Ukraine’s Conflict. j. Int. relat. ener. relat. [Internet]. 2024Jul.30 [cited 2025Apr.4];5(1):57-79. Available from: https://jisea.universitaspertamina.ac.id/index.php/jisea/article/view/472