Charisma, Bryan, Iwan Agung Firstantara, Dedeng Hidayat, Ignatius Rendroyoko, and Agung Wibowo. “Economic Value Added Analysis of Portfolio Alignment in the Primary Energy Business of PLN Group and Its Impact on PLN Energi Primer Indonesia”. European Journal of Economics 4, no. 1 (June 20, 2024): 48–66. Accessed February 15, 2025. https://diamondopen.com/journals/index.php/eje/article/view/655.