Higashi, Masao, Takahito Nakao, Junsuke Morita, and Tooru Kitagawa. 2016. “Nanofiltration Hollow Fiber Membranes Made from Sulfonated Polysulfone Having a Cyanophenylene Group”. Journal of Membrane and Separation Technology 5 (2):57-61. https://doi.org/10.6000/1929-6037.2016.05.02.2.