“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”, JUBPAS, vol. 26, no. 2, pp. 73–93, Feb. 2018, Accessed: May 03, 2025. [Online]. Available: https://www.journalofbabylon.com/index.php/JUBPAS/article/view/823