Wang, Liping, Gongying Wang, and Fan Wang. 2015. “Transesterification Between Diphenyl Carbonate and 1,4-Butanediol to Polycarbonate Diol Catalyzed by Various Metal Acetylacetonates”. Asian Journal of Chemistry 27 (8):2967-70. https://doi.org/10.14233/ajchem.2015.18339.