1. Anagnostatos, G.S.: Phys. Lett.A154, 169 (1991).
2. Anagnostatos, G.S.: Phys. Lett.A128, 266 (1988).
3. Anagnostatos, G.S., invited lecture presented at the International Conference on ?Nuclear and Atomic Clusters 1991?, Turku, Finland, June 3?7, 1991: Clustering Phenomena in Atoms and Nuclei, eds. Brenner, M., L�nnroth, T., Malik, F.B., Springer-Verlag, N.Y., 1991, p. 68.
4. Anagnostatos, G.S., invited lecture presented at the ?XVth International Workshop on Condensed Matter Theories?, Mar del Plata, Argentina, July 1?5, 1991: Condensed Matter Theories, Vol. 7, eds. Proto, A.N. and Aliaga, J.L., Plenum Press, N.Y. 1991, p. 399.
5. Anagnostatos, G.S., invited lecture presented at the International Heraeus-Workshop on ?Nuclear Physics Concepts in Atomic Cluster Physics?, Bad Honnef, Germany, November 26?29, 1991: Lecture Notes in Physics, No. 404, eds. Schmidt, R., Lutz, H.O., Dreizler, R., Springer-Verlag, Berlin 1992, p. 54.