This workshop, held September 15–18, 1992 in Giardini Naxos (Italy), was the 7th Topical Meeting of the Liquids Section from the Condensed Matter Division of the European Physical Society. The Directors were J. Teixeira (Laboratoire Léon-Brillouin, Saclay, France), A.J. Dianoux (Institut Laue-Langevin, Grenoble, France) and F. Wanderlingh (University of Messina, Italy). The Organizing Committee was composed of R. Giordano (University of Messina, Italy) and J.C. Leickmann (University Paris VI, France).