R. D. C. Ningrum and N. Kusumawati, “Development and Characterization of Polysulfone/Polyvinylidene Flouride Blend Membrane Induced by Delayed Liquid-Liquid Demixing”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 6, no. 5, pp. 716–722, Oct. 2016.