HUSSEIN, Shaymaa T.; ALI, Emad T.; ALI, Khalid F.; TOMMA, Jombod H. Evidence Supports The Formation Of Isoimides Derived From Pyromellitic Dianhydride. Ibn AL-Haitham Journal For Pure and Applied Sciences, Baghdad, Iraq., v. 26, n. 1, p. 241–249, 2017. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/530. Acesso em: 29 mar. 2025.