Thiergart, F., and U. Frantz. “Some Spores and Pollen Grains from the Tertiary Browncoal of Neyveli”. Journal of Palaeosciences 11, no. (1-3) (December 31, 1962): 43–45. Accessed October 6, 2024. https://jpsonline.co.in/index.php/jop/article/view/620.