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. (2018). JOURNAL OF UNIVERSITY OF BABYLON for Pure and Applied Sciences, 26(2), 73-93. https://www.journalofbabylon.com/index.php/JUBPAS/article/view/823