Hendrawan, Y. et al. 2020. Modelling and Optimization of Alginate-Chitosan Concentration towards Tensile Strength Pervaporation Membrane based Polyethersulfone-Biopolymer by Using Response Surface Methodology. International Journal on Advanced Science, Engineering and Information Technology. 10, 4 (Aug. 2020), 1654–1661. DOI:https://doi.org/10.18517/ijaseit.10.4.6022.