A. Verma, Vaijinath, et al. “Synthesis of Schiff Base Indolyl-1,3,4-Oxadiazole, Thiazolidinone and Azetidinone As Efficient Antimicrobial, Antioxidant, Antituberculosis and Anticancer Agents”. Asian Journal of Organic & Medicinal Chemistry, vol. 4, no. 2, June 2019, pp. 77-88, doi:10.14233/ajomc.2019.AJOMC-P175.