1. See for example B. C. Gates, L. Guczi, and H. Knozinger (eds.),Metal Clusters in Catalysis (Elsevier, Amsterdam, 1986);
2. P. Braunstein and J. Rose,in I. Bernal (Ed.),Stereochemistry of Organometallic and Inorganic Compounds, Vol. 3 (Elevier, Amsterdam, 1989);
3. J. P. Fackler, Jr. (Ed.),Metal-metal Bonds and Clusters in Chemistry and Catalysis (Plenum, New York, 1990);
4. D. F. Shriver, H. D. Kaesz, and R. D. Adams (Eds.),The Chemistry of Metal Cluster Complexes (VCH, New York, 1990);
5. P. Braunstein and J. Rose,in E. Abel, F. G. A. Stone, and G. Wilkinson (Eds.),Comprehensive Organometallic Chemistry, Vol. 10, Chap. 7 (Pergamon Press, Oxford, 1995).