Idarwati, I., & Maulia, D. (2024). Neogene Coal Characteristics and Depositional Environments in the Kikim Area of South Sumatra Basin; Insights from logging, proximate test, sulfur test and electrofacies. Berita Sedimentologi, 50(1), 75–92. https://doi.org/10.51835/bsed.2024.50.1.460