Haque, M. E., Z. Mahmud, A. K. M. M. Hasan, R. Sardar, M. L. Kabir, and S. T. Haque. “Betulin-3-Caffeate and Amyrin from the Stem Bark of Barringtonia Acutangula (L)”. Bioresearch Communications - (BRC), vol. 1, no. 2, July 2022, pp. 121-3, https://www.bioresearchcommunications.com/index.php/brc/article/view/162.