Boonmahitthisud, Anyaporn, Phasawat Chaiwutthinan, Sitthipong Samutthong, Onusa Saravari, and Saowaroj Chuayjuljit. 2014. “Effects of poly(butylene Succinate) and Calcium Carbonate on the Physical Properties of Plasticized poly(vinyl Chloride)”. Journal of Metals, Materials and Minerals 24 (2). Bangkok, Thailand. https://jmmm.material.chula.ac.th/index.php/jmmm/article/view/113.