N. H. M. Safari, S. Rozali, A. R. Hassan, and M. Ahmad, “Tailoring of Narrow Pores, Pore Size Distribution and Structural Details in Asymmetric Nanofiltration Membranes via Polyvinyl-pyrrolidone Additive”, Period. Polytech. Chem. Eng., vol. 66, no. 4, pp. 576–584, Jan. 2022.