NAIMAH, K.; SASONGKO, N. A.; WIDAYATNO, R. L. Financial Analysis of Green Petroleum Coke as A Coal Blend in Steel Industry to Support National Energy Security. Journal of Developing Economies, [S. l.], v. 6, n. 2, p. 275–285, 2021. DOI: 10.20473/jde.v6i2.24825. Disponível em: https://e-journal.unair.ac.id/JDE/article/view/24825. Acesso em: 10 may. 2025.