S. A. Saued, J. H. Tomma, and E. T. Ali, “Synthesis and Characterization of Novel 1,3-Oxazepines Derived from Diamic Acid : N,N‾-Bis-(4-methyl phenyl ) pyromellitamic Diacid”, IHJPAS, vol. 27, no. 3, pp. 381–392, Apr. 2017, Accessed: Nov. 22, 2024. [Online]. Available: https://jih.uobaghdad.edu.iq/index.php/j/article/view/304