“Synthesis and Characterization of Novel 1,3-Oxazepines Derived from Diamic Acid : N,N‾-Bis-(4-methyl phenyl ) pyromellitamic Diacid” (2017) Ibn AL-Haitham Journal For Pure and Applied Sciences, 27(3), pp. 381–392. Available at: https://jih.uobaghdad.edu.iq/index.php/j/article/view/304 (Accessed: 2 May 2024).