Seada, M., A.M. Abdel-Halim, S.S. Ibrahim, and M. Abdel-Megid. “Synthesis and Biological Activities of Some New Pyrazolo [3,4-D] Pyrimidine Derivatives”. Asian Journal of Chemistry 4, no. 3 (March 30, 2010): 588–596. Accessed October 3, 2024. https://asianpubs.org/index.php/ajchem/article/view/25100.