1. (a)U. Woggon, “Optical Properties of Semiconductor Quantum Dots”, Springer, Berlin, 1997;
2. (b)L. Jack, P. Hawrylak, A. Wojs, Quantum Dots, Springer, Berlin, 1998;
3. (c)D. Bimberg, M. Grundmann, N.N. Ledentsov, Quantum Dot Heterostuctures, Wiley, New York, 1998
4. (a)N.F. Johnson, J. Phys,:Condens. Matter 7, 965 (1995);
5. Artificial Atoms