“Preparation Characterization and Study Thermal Properties of New Aromatie Polyester Based on Di Hydroxyl Monomers With 4,4-Azo Di Benzoic Acid Maleic Acid and Phthalic Acid”. JOURNAL OF UNIVERSITY OF BABYLON for Pure and Applied Sciences 26, no. 2 (February 28, 2018): 73–93. Accessed May 3, 2025. https://www.journalofbabylon.com/index.php/JUBPAS/article/view/823.