Xiang, T., C. Cheng, and C. Zhao. “Heparin-Mimicking Polymer Modified Polyethersulfone Membranes - A Mini Review”. Journal of Membrane and Separation Technology, vol. 3, no. 3, Aug. 2014, pp. 162-77, doi:10.6000/1929-6037.2014.03.03.7.