Samant, Bandana. “Palynostratigraphy and Age of the Bhavnagar Lignite, Gujarat, India”. Journal of Palaeosciences 49, no. (1-3) (December 31, 2000): 101–118. Accessed April 29, 2024. https://www.jpsonline.co.in/index.php/jop/article/view/137.