1. (a) A. Clearfield, G.H. Nancollas, and R.H. Blessing, Ion Exchange and Solvent Extraction, ed. J.A. Marinsky and Y. Marcus, Chapter 1, Marcus Dekker, New York (1973);
2. (b) A. Clearfield, in Inorganic Ion-Exchanger Materials, ed. A. Clearfield, Chapter 1, CRC Press, Boca Raton, FL (1982).
3. G. Alberti and U. Costantino, in Inclusion Compounds, ed. J.L. Atwood, J.E.D. Davies, and D.D. MacNicol, Chapter 5, New York University Press, New York (1982).
4. Intercalation of alkanols and alkylamines in insoluble acid salts of tetravalent metals having a layered structure of γ-type
5. D.M. Poojary, B. Shpeizer, and A. Clearfield, J. Chem. Soc., Dalton Trans, 111 (1995).