1. W.F. Blatt, Ultrafiltration for Enzyme Concentration, in:Methods in Enzymology, Vol. 22, M.W. Jakoby, ed., Plenum Press, New York (1971).
2. P.R. Klinowski, Ultrafiltration: An Energing Unit Operation, Chem. Engr. 85 (11): 169 (1978).
3. M.C. Porter and L. Nelson, Ultrafiltration in the Chemical, Food Processing,Pharmaceutical and Medical Industries, in: “Recent Developments in Separation Science,” Vol. 2, N.N. Li, ed., CRC Press, Cleveland (1972).
4. P. Mears, ed., Membrane Separation Processes, Elsevier Scientific, New York (1976).
5. U.R. Lebras and R.M. Christenson, Ultrafiltration - A Process Aid in Electrocoating, J. Paint Tech., 44: 63 (1972).