Liu, Wei, and Wei-Hao Zhai. “A Uniform Viscoelastic-Plastic Constitutive Model for MD-PMMA at a Wide Temperature Range”. Journal of Research Updates in Polymer Science 4, no. 3 (October 28, 2015): 139–148. Accessed April 29, 2024. https://www.lifescienceglobal.com/pms/index.php/jrups/article/view/3381.