Cao, Chun; Chung, Tai-Shung; Bor Chen, Shing; Dong, ZhengJun (2004). «The study of elongation and shear rates in spinning process and its effect on gas separation performance of Poly(ether sulfone) (PES)hollow fiber membranes». Chemical Engineering Science59: 1053-1062. doi:10.1016/j.ces.2003.10.023.