References
- Frank , F. C. 1958 . Disc. Faraday Soc. , 25 : 1
- Kleman , M. and Friedel , J. 1969 . J. de Phys. , 30 : C-43
- Dzyaloshinskii , I. E. 1970 . J.E.T.P. , 31 : 773
- Rault , J. 1972 . J. de Phys. , 33 : 383 and Solid State Comm. 9, 1965 (1971).
- Cladis , P. E. and Kleman , M. 1972 . J. de Phys. , 33 : 591
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- Williams , C. , Pieranski , P. and Cladis , P. E. 1972 . Phys. Rev. Letters , 29 ( 2 ) : 90
- Scheffer , T. J. and Gruler , H. private communication.
- De Gennes , P. G. 1968 . CRAS , 266 : 15
- Grandjean , F. 1919 . Rull. Soc. Franç. Miner. , 42 : 42 For optical properties of uniaxial crystals, see for example Hartshorne, N. H. and Stuart, A., Crystals and the Polarizing Microscope, Edward Arnold and Company, London, 1970.