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Purkayastha, Jayaditya and Das, I. and Sengupta, S. (2015) Freshwater turtles and tortoises of South Asia. Bhabani Books.
Das, I. and Sengupta, S. and Praschag, P. (2010) Pangshura sylhetensis Jerdon 1870 – Assam Roofed Turtle. Chelonian Research Monographs, 5.
Sengupta, S. and Sailo, S. and Lalremsanga, H.T and Das, A. and Das, I. (2010) A new species of Leptolalax (Anura: Megophryidae) from Mizoram, North-eastern India. Zootaxa, 2406. pp. 56-68. ISSN 1175-5334 (online)
Das, I. and Sengupta, S. and Ahmed, M. Firoz and Dutta, S. (2004) A new species of kaloula (anura: microhylidae) from north-eastern India. Hamadryad, 29 (1). pp. 101-109. ISSN 0972-205X
Das, I. and Sengupta, S. (2000) A new species of Cnemaspis (Sauria: Gekkonidae) from Assam, north-eastern India. Journal of South Asian Natural History, 5 (1). pp. 17-24. ISSN 1022-0828