NIEF, O. A. Synthesis and Identification of Heterocyclic Compounds (Oxazepine, Tetrazole) Derived from Benzidine as Photostabilizing for Poly vinyl chloride. Al-Mustansiriyah Journal of Science, [S. l.], v. 28, n. 2, p. 108–118, 2018. DOI: 10.23851/mjs.v28i2.521. Disponível em: https://mjs.uomustansiriyah.edu.iq/index.php/MJS/article/view/521. Acesso em: 11 aug. 2022.