1. B. W. Deryagin (Ed.), Research in Surface Forces, Consultants Bureau, New York and London, Vol. 1, 1963; Vol. 2, 1966; Vol. 3, 1966; Vol. 4, 1975.
2. W. Drost-Hansen, Ind. Eng. Chem., 61 (1969) 10.
3. K. Klier and A. C. Zettlemoyer, J. Colloid Interf. Sci., 58 (1977) 216.
4. D. W. Harkins, The Physical Chemistry of Surface Films, Reinhold Publ. Corp., New York, 1957.
5. P. Staszczuk and A. Waksmundzki, Problemy Agrofiziki, Ossolineum, Wroclaw, 1982, no 37.