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3. G. Longoni, A. Ceriotti, M. Marchionna and G. Piro, ’Large Molecular Metal Carbonyl Clusters: Models of Metal Particles’, in Surface Organometallic Chemistry: Molecular Approaches to Surface Catalysis,J. M. Basset et al. (eds.), Kluwer Acad. Publ. (1988) pp. 157–172 (and references in this review) . (See also Chapter 2 of this volume).
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5. D. F. Shriver, H. D. Kaesz and R.D. Adams (eds.), The Chemistry of Metal cluster Complexes,VCH Publishers (1990).