Limpiti, Thidarat, and Pranut Potiyaraj. 2017. “Mechanical Property Improvement of UPE Resin from Glycolyzed PET With Commercial UPE Resin”. Journal of Metals, Materials and Minerals 19 (1). Bangkok, Thailand. https://jmmm.material.chula.ac.th/index.php/jmmm/article/view/222.