Shukla, R. Rakesh, and S. Siddharth. “Petrological Basis for Rank (maturity) Determination of Permian Coals from Pathakhera Coal Belt, Satpura Basin, M. P., India”. Journal of Nepal Geological Society 23 (December 1, 2001): 13–18. Accessed November 22, 2024. https://nepjol.info./index.php/JNGS/article/view/31862.