Saxena, Rakesh, G.K.B. Navale, D. Chandra, and Y.V.S. Prasad. 1989. “Spontaneous Combustion of Some Permian Coal Seams of India: An Explanation Based on Microscopic and Physico-Chemical Properties”. Journal of Palaeosciences 38 (December):58-82. https://doi.org/10.54991/jop.1989.1641.