Halim, ME, K Akhter, M Hasan, MM Rahman, UKR Romman, and MG Ahmed. “Synthesis of Potential Pharmaceutically Active Dihydropyrimidine-2-Oxo and Their 2-Thio Analogues”. Bangladesh Journal of Scientific and Industrial Research 53, no. 4 (December 9, 2018): 327–332. Accessed August 13, 2022. https://www.banglajol.info/index.php/BJSIR/article/view/39198.