Synthesis of Dispiro 1,3-Oxazepine4,7-Diones. Journal of the College of Basic Education, [S. l.], v. 16, n. 66, p. 109–115, 2022. DOI: 10.35950/cbej.vi.7722. Disponível em: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/7722.. Acesso em: 19 jul. 2024.