1. Gee, M. L., McGuiggan, P. M., Israelachvili, J. N. & Homola, A. M. J. chem. Phys. 93, 1895–1906 (1990).
2. Fletcher, N. H. & Rossing, T. D. The Physics of Musical Instruments (Springer, New York, 1992).
3. Pusey, P. N. in Liquids, Freezing and the Glass Transition (eds Hansen, J. P., Levesque, D. & Zinn-Justin, J.) 763–942 (North Holland, Amsterdam, 1991).
4. Ackerson, B. J. Phase Transitions 21, 2–4 (1991).
5. Voegtli, L. P. & Zukoski, C. F. J. Coll. Interface Sci. 113, 79–91 (1991).