Synthesis Of New Asymmetrical Pyromellitdiimides Derived From Pyromellitic Dianhydride. Ibn AL-Haitham Journal For Pure and Applied Sciences, [S. l.], v. 25, n. 3, p. 284–293, 2017. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/595.. Acesso em: 28 apr. 2024.