Vu, Loi D., et al. “Anti-Ulcer Effect on Indomethacin-Induced Ulcerated Mice of Chromolaena Odorata Leaf from Vietnam and Its Secondary Metabolites: Http: www.doi.org 10.26538 Tjnpr V7i5.8”. Tropical Journal of Natural Product Research (TJNPR), vol. 7, no. 5, June 2023, pp. 2889-94, https://tjnpr.org/index.php/home/article/view/1959.