Prakash, Anand. “The Fossil Floras of Kachchh. V - Nature, Composition and Rank (Maturation) of Mesozoic Coals”. Journal of Palaeosciences 34 (December 31, 1985): 281–293. Accessed April 29, 2024. https://jpsonline.co.in/index.php/jop/article/view/541.