Srivastava, S., Anand-Prakash, and R. Kar. “Palynology of Permian-Triassic Sequence in Iria Nala, Tatapani-Ramkola Coalfield, India”. Journal of Palaeosciences, vol. 46, no. (1-2), Dec. 1997, pp. 75-80, doi:10.54991/jop.1997.1318.