F. W. Mahatmanti (2021) “Chitosan-silica- polyethylene Glycol (Ch/Si/P) Solid Membrane for Removal of Cu(II), Zn(II) and Cd(II) Ions from Aqueous Solutions”, Challenges and Advances in Chemical Science Vol. 1, pp. 54–72. doi: 10.9734/bpi/cacs/v1/8924D.