1. P. A. Winsor, Chem. Rev. 68, 1 (1968).
2. P. Ekwall, L. Mandell and K. Fontell, in “Proc. Fifth Internat. Congr. on Surface Active Substances,” 443–453, Ediciones Unidas, Barcelona, 1968.
3. P. A. Winsor, in “Liquid Crystals and Plastic Crystals,” Vol. 1, G. W. Gray and P. A. Winsor, Editors, Ch. 5, pp. 199–287, Ellis Horwood Ltd., Chichester, 1974.
4. P. Ekwall, Adv. Liq. Cryst. 1, 1 (1975).
5. I. F. Efremov, in “Surface and Colloid Science,” E. Matijevie, Editor, Vol. 8, Ch. 2, pp. 85–192, Wiley-Interscience, New York, 1976.