Nora’aini, A., H. Sofiah, A. Asmadi, and M. Abdul Wahab. 2017. “Preparation and Characterization of Asymmetric Ultrafiltration Membrane for Lysozyme Separation: Effect of Polymer Concentration”. Journal of Applied Membrane Science &Amp; Technology 11 (1). https://doi.org/10.11113/amst.v11i1.76.