Hasan, Aurangzeb, Musfirah Khaleeq, and Uzma Riaz. 2010. “Synthesis and Characterization of Some New 2-Amino-4- (4’-Substituted)-6-(4’’-substituted)diphenyl Pyrimidines”. Asian Journal of Chemistry 22 (7):5581-87. https://asianpubs.org/index.php/ajchem/article/view/11678.