Aiube, Zakaria H., Fadhel S. Matty, & Hiba A. Ghani Al-zaidi. " Synthesis And Imidization Of Disuccinamic Acid As Polyvinyl Alcohol-Composite Polymer." Ibn AL- Haitham Journal For Pure and Applied Science [Online], 27.2 (2014): 211-219. Web. 30 Nov. 2019