KUMAR, S. Studies of Biologically Active Heterocycles: Synthesis, Characterization and Antimicrobial Activity of Some 5-Substitutd-2-Amino-1,3,4-Oxadiazoles. Dhaka University Journal of Pharmaceutical Sciences, [S. l.], v. 9, n. 1, p. 53–59, 2011. DOI: 10.3329/dujps.v9i1.7434. Disponível em: https://www.banglajol.info/index.php/JPharma/article/view/7434. Acesso em: 8 dec. 2021.