1. W. Heller, Rev. Mod. Physics 14: 390 (1942).
2. S. P. Stoylov, V. N. Shilov, S. S. Dukhin, S. Sokerov, I. Petkanchin, (S. S. Dukhin, ed.), Electro-optics of Colloids Naukova Dumka, Kiev (1977).
3. H. Watanable, K. Yoshioka, in “Electro-optics and Dielectrics of Macromolecules and Colloids”, (B. R. Jennings, ed.), Plenum Press, N.Y. (1979) p. 345.
4. C. T. O’Konski, S. Krause, in “Molecular Electro-optics”, part I, (C. T. O’Konski, ed.), Marcel Dekker, N. Y. (1976) chapter 3.
5. E. Neumann, in “Elektro-optiks and Dielectrics of Macromolecules and Colloids”, (B. R. Jennings, ed.), Plenum Press, N. Y. (1979) p. 233.