Orabi, MAA, M E Abouelela, and RA Abdelhamid. “Phytochemical Constituents of Plant Species of Pterocarpus (F: Leguminosae): A Review”. International Journal of Pharmacognosy and Phytochemical Research 11, no. 4 (August 25, 2019): 264-281. Accessed July 5, 2020. http://ijppr.com/index.php/IJPPR/article/view/1022.