Maheshwari, H., V. Singh, and U. Bajpai. “Bengalia Raniganjensis, a New Sphenopsid from the Raniganj Formation, Upper Permian”. Journal of Palaeosciences, vol. 37, no. (1-3), Dec. 1988, pp. 169-72, doi:10.54991/jop.1988.1613.