1. Lehmann, O., Z. physik. Chem.4, 462 (1889);5, 427 (1890).
2. Brown, G. H. andW. G. Shaw, Chem. Rev.57, 1049 (1957). ?Porter, R. S. andJ. F. Johnson, The Rheology of Liquid Crystals. In: Rheology IV, Chapt. 5, ed. byF. Eirich (New York 1968).
3. cf.Lawrence, A. C. S., Trans. Farad. Soc.34, 660 (1938); The Faraday Society's General Discussion on Liquid Crystals and Anisotropic Melts, p. 1008 (1933).
4. Ostwald, Wo., The Faraday Society's General Discussion on Liquid Crystals and Anisotropic Melts, p. 1002 (1933). ?Porter, R. S. andJ. F. Johnson, loc. cit.
5. Sakamoto, K., R. S. Porter, andJ. F. Johnson, Proc. 2nd Intern. Conf. on Liquid Crystals, Part 1, 237 (1968). ?Fukada, E., unpublished, private communication.