1. R. J. S. Brown andI. Fatt:Trans. AIME,207, 262 (1956).
2. G. C. Borgia, R. J. S. Brown, P. Fantazzini, J. Gore, P. Mansfield, B. Maraviglia, E. Mesini andL. Sgubini (Editors):Proceedings of the First International Meeting on Recent Advances in NMRApplications to Porous Media, Bologna, Italy, 14–16 November 1990, Magn. Reson. Imaging,9, (1991).
3. M. H. Cohen andK. S. Mendelson:J. Appl. Phys.,52, 1127 (1982).
4. J. R. Banavar andL. M. Schwartz: inMolecular Dynamics in Restricted Geometries, edited byJ. Klafter andJ. M. Drake (J. Wiley and Sons, New York, N.Y., 1989).
5. W. P. Halperin, F. D’Orazio, S. Bhattacharja andJ. C. Tarczon: inMolecular Dynamics in Restricted Geometries, edited byJ. Klafter andJ. M. Drake (J. Wiley and Sons, New York, N.Y., 1989).