Cai, Xueming, Shufang Lv, Panjin Jia, Qing Han, and Mingtao Run. 2015. “Preparation and Properties of Main Chain Phosphorus Containing Poly(trimethylene Terephthalate) Block Copolymers”. Asian Journal of Chemistry 27 (7):2559-63. https://doi.org/10.14233/ajchem.2015.18277.