1. Rosen, M.J.,Surfactants and Interfacial Phenomena, John Wiley and Sons, New York, 1978.
2. Cutler, G., and E. Kissa,Detergency Theory and Technology, Vol. 20, Marcel Dekker Inc., New York.
3. Cutler, G., and R.C. Davis,Detergency Theory and Test Methods, Part II, Vol. 5, Marcel Dekker Inc., New York, p. 479.
4. Miller, D.J.,Precipitation of Anionic Surfactants by Calcium Ions, CESIO 2nd World Surfactants Congress, Paris, May 24–27, 1988.
5. Bercovci, R., and H. Krussmann,Proc. World Surfactants Congress, Kürle-Verlag Gelnhausen, 1984, p. 146.