Budiman, Nuans Asa S, and Iqbal Ramadhan. 2024. “Defining European Union’s Energy Security from the Perspective of 4A (Availability, Accessibility, Acceptability, Affordability) As an Impact from Russia-Ukraine’s Conflict”. Journal of International Studies on Energy Affairs 5 (1):57-79. https://doi.org/10.51413/jisea.Vol5.Iss1.2024.57-79.