1. F. C. Frank:Discuss. Faraday Soc.,25, 19 (1958).
2. J. Nehring andA. Saupe:J. Chem. Phys.,54, 337 (1971);J. Chem. Phys.,56, 5527 (1972);E. Dubois-Violette andO. Parodi:J. Phys. (Paris), Coll.,30, 4 (1969).
3. The anchoring is strong if the director angles at the walls assume prefixed values; otherwise, the anchoring is weak.
4. K 13,K 24 are called surfacelike elastic constants, since they appear only connected to the walls’ anchoring conditions.
5. G. Barbero andA. Strigazzi:J. Phys. (Paris) Lett.,45, L-857 (1984).