„Anti-Gastric Ulcer Effect of Betulinic Acid in Male Albino Rats“. Nigerian Journal of Physiological Sciences 30, no. 1 (Мај 20, 2021): 033–037. приступљено Април 5, 2026. https://www.ojshostng.com/index.php/njphysiologicalsciences/article/view/1831.