Prakash, U., N. Awasthi, and Y. Lemoigne. “Fossil Dicotyledonous Woods from the Tertiary of Blue Nile Valley, Ethiopia”. Journal of Palaeosciences 30 (December 31, 1982): 43–59. Accessed May 10, 2024. https://www.jpsonline.co.in/index.php/jop/article/view/1440.