1. Pedersen CJ (1967) J Am Chem Soc 89:7017
2. Sutherland IO (1990) In: Gokel GW (ed) Advances in Supermolecular Chemistry, Chap 1. JAI Press, Greenwich,
p 65
3. An H-Y, Bradshaw JS, Izatt RM, Yan Z (1994) Chem Rev 94:939
4. Gokel GW (1992) Chem Soc Rev 39:3
5. Inokuma S, Funaki T, Nishimura J (2002) In: Takemura H (ed) Cyclophanes chemistry for the 21th Century,
Chap. 7. Research Signpost, Kerala, India, p 149