1. G. Schay, in: E. Matijevic (Ed.), Surface and Colloid Science, vol. 2, Wiley, London, 1969, p. 155.
2. G. Schay, in: D.H. Everett (Ed.), Surface Area Determination, Proc. Int. Symp. 1969, Butterworths, London, 1970, p. 273.
3. J.J. Kipling, Adsorption from Solutions of Non-Electrolytes, Academic Press, London, 1965.