Krausel, R., P.K. Maithy, and Hari K. Maheshwari. “Gymnospermous Wood With Primary Structures from Gondwana Rocks - A Review”. Journal of Palaeosciences 10, no. (1-2) (December 31, 1961): 97–107. Accessed May 9, 2024. https://jpsonline.co.in/index.php/jop/article/view/612.