1. For reviews, see: (a) Pochini, A.; Ungaro, R. Comprehensive Supramolecular Chemistry, Vol. 2; Vögtle, F., Ed.; Pergamon: Oxford, 1996; p. 103.
2. (b) Gutsche, C. D. Calixarenes in Monographs in Supramolecular Chemistry; Stoddart, J. F., Ed.; The Royal Society of Chemistry: Cambridge, 1989.
3. (c) Calixarenes: a Versatile Class of Macrocyclic Compounds; Vicens, J.; Böhmer, V., Eds.; Kluwer Academic Publishers: Dordrecht, 1991.
4. (d) Gutsche, C. D. Calixarenes Revisited in Monographs in Supramolecular Chemistry; Stoddart, J. F., Ed.; The Royal Society of Chemistry: Cambridge, 1998.
5. Cram, D. J.; Cram, J. M. Container Molecules and Their Guests in Monographs in Supramolecular Chemistry; Stoddart, J. F., Ed.; The Royal Society of Chemistry: Cambridge, 1994.