Mohammed, F. Z., I. M. EL-Deen, and A. S. Tmamm. “Biochemical Studies on Coumarin Derivatives As Antioxidant and Antitumor Agents”. Asian Journal of Research in Biochemistry, Vol. 4, no. 3, May 2019, pp. 1-16, doi:10.9734/ajrb/2019/v4i330069.