1. For monographs and reviews covering the more general aspects of this field see for example: (a) Transition Metal Clusters (Ed.: ). Wiley, New York, 1980;
2. (b) : Introduction to Cluster Chemistry, Oxford, 1990;
3. Bonding models for ligated and bare clusters
4. (d) Metal Clusters (Ed.: ), Wiley, New York, 1986;
5. (e) Metal Clusters in Catalysis (Eds.: ), Elsevier, Amsterdam, 1986;