Alaa Zam, and Mohammad Othman. “Antioxidant Activity and Other Physicochemical Characteristics of Different Propolis Extracts”. Journal of Pharmacy and Nutrition Sciences 8, no. 2 (April 5, 2018): 59–67. Accessed October 6, 2024. http://set-publisher.com/index.php/jpans/article/view/1974.