Saeed, Aamer, et al. “Synthesis of 4-Aryl-2,6-Dimethyl-3,5-Bis-N-(aryl)-Carbamoyl-1,4-Dihydropyridines As Novel Skin Protecting and Anti-Aging Agents”. Bangladesh Journal of Pharmacology, vol. 12, no. 2, June 2017, pp. 210-5, doi:10.3329/bjp.v12i2.32023.