Novel Schiff Bases Derived From Pyromellitic Dianhydride. Ibn AL-Haitham Journal For Pure and Applied Sciences, [S. l.], v. 27, n. 3, p. 479–492, 2017. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/313.. Acesso em: 27 apr. 2024.