Mandal, J., and J.S. Guleria. “Palynology of Vastan Lignite (Surat District), Gujarat: Its Age, Palaeoecology and Depositional Environment”. Journal of Palaeosciences 55, no. (1-3) (December 31, 2006): 51–66. Accessed May 2, 2024. https://www.jpsonline.co.in/index.php/jop/article/view/95.