1. M. Ratner and D. Ratner, Nanotechnology, A Gentle Introduction to the Next Big Idea (Bernard Goodwin, New Jersey, 2003), Vol. 1, Chap. 1, p. 3.
2. D. J. Wales, in Energy Landscapes, with Applications to Clusters, Biomolecules and Glasses, edited by R. Saykally (Cambridge University Press, Cambridge, 2003), Vol. 1, Chap. 1, p. 9.
3. Fusion and fragmentation of colliding metal clusters
4. Molecular-dynamics study of cluster growth by cluster-cluster collisions
5. Electronic and geometric structure in silver clusters