Prasad, M. and Awasthi, N. 1994. Contribution to the siwalik flora from Surai Khola sequence, western Nepal and its palaeoecological and phytogeographical implications. Journal of Palaeosciences. 43, 1-3 (Dec. 1994), 1–42. DOI:https://doi.org/10.54991/jop.1994.1184.