1. Alberti G., Casciola M., Costantino U., Vivani R.:(1996) Adv. Mater. 8: 291
2. Clearfield A.: (1988) Chem. Rev. 88:125
3. G. Alberti and U. Costantino: in J.L. Atwood, J.E.D. Davies, and D.D. Mac Nicol (eds.), Inclusion Compounds, Vol. 5, Oxford University Press, Oxford (1991), pp. 136–157
4. A. Clearfield: in W. Müller-Warmuth and R. Schöllhorn (eds.), Progress in Intercalation Research, Vol. 17, Kluwer Academic Publishers, Dordrecht (1994), pp. 240–252
5. A. Clearfield and U. Costantino: in G. Alberti and T. Bein (eds.), Comprehensive Supramolecular Chemistry, Vol. 7, Pergamon, Oxford (1996), pp. 107–139