Alqodri, Lubna, et al. “Comparison of Antioxidant and Anti-Collagenase Activities Ethanol Extract of Black Soybeans With Daidzein Compounds”. American Scientific Research Journal for Engineering, Technology, and Sciences, vol. 70, no. 1, June 2020, pp. 90-98, https://www.asrjetsjournal.org/American_Scientific_Journal/article/view/5560.