Singh, S. ., and S. K. . Saha. “A Paleo-Bioclimatological Study on Gondwana Coal Deposits in Northwestern Bangladesh and the Associated Environment Reflected by Pollen and Geochemical Analysis”. Journal of the Asiatic Society of Bangladesh, Science, vol. 49, no. 1, July 2023, pp. 101-19, doi:10.3329/jasbs.v49i1.67599.