Faghihi, K., A. Asghari, and M. Hajibeygi. “Synthesis and Characterization of Thermally Stable poly(amide-Imide)-Montmorillonite Nanocomposites Based on bis(4-Carboxyphenyl)-N,N’-Pyromellitimide Acid”. Bulletin of the Chemical Society of Ethiopia 27, no. 1 (December 15, 2012): 95–104. Accessed August 31, 2026. https://www.ajol.info/index.php/bcse/article/view/84080.