1. Kritchevsky, T.H., Soap Chem. Spec. 34(11): 48–50 (1958).
2. Dutton, K.R., and W.B. Reinisch, Mfg. Chem. 28 (3): 124–127 (1957).
3. Weil, J.K., N. Parris and A.J. Stirton, JAOCS 47: 91–93 (1970).
4. Weil, J.K., N. Parris and A.J. Stirton, Ibid. 48: 35–37 (1971).
5. Jungermann, E., and D. Taber, “Nonionic Surfactants,” Edited by M.J. Schick, Marcel Dekker, Inc., New York, 1967, p. 208–246.