1. M.A. Johnson and G. Maggiora (eds.),Concepts and Applications of Molecular Similarity (Wiley, New York, 1990).
2. R.I. Zalewski, T.M. Krygowski and J. Shorter (eds.),Similarity Models in Organic Chemistry, Biochemistry and Related Fields (Elsevier, Amsterdam, 1991).
3. Proceedings of 3rd Beilstein Workshop on Similarity in Organic Chemistry, Bozen, Italy (May 1992), special issue of J. Chem. Inf. Comp. Sci. 32 (1992) 577.
4. R. Carb� and P.G. Mezey (eds.),Molecular Similarity and Reactivity. From Quantum Chemical to Phenomenological Approaches (Kluwer Academic, 1995).
5. Topics in Current Chemistry,1995