Mohamed, Y.T., Hussin, L.S., Gad, H.H., Daifullah, A.M. and Abo-El-Enein, S.A. 2013. Membrane Stabilitiy and Removal of Cobalt from Waste Solution Using Liquid Emulsion Membrane. Journal of Membrane and Separation Technology. 2, 1 (Feb. 2013), 102–108. DOI:https://doi.org/10.6000/1929-6037.2013.02.01.10.