1. For reviews of supersymmetry and the Minimal Supersymmetric Standard Model, see H. Nilles, Phys. Rep. 110 (1984) 1; H.E. Haber, G.L. Kane, Phys. Rep. 117 (1985) 75.
2. S. Dimopoulos, D. Sutter, Nucl. Phys. B 452 (1995) 496; H. Haber, in: M. Cvetić, P. Langacker (Eds.), Proceedings of the 5th International Conference on Supersymmetries in Physics (SUSY'97), May 1997, hep-ph/9709450.
3. A. Leike, Int. J. Mod. Phys. A 3 (1988) 2895; M.A. Diaz, S.F. King, Phys. Lett. B 349 (1995) 105; B 373 (1996) 100; J.L. Feng, M.J. Strassler, Phys. Rev. D 51 (1995) 4461; D 55 (1997) 1326; G. Moortgat-Pick, H. Fraas, hep-ph/9708481.
4. S.Y. Choi et al., hep-ph/9806279, Eur. Phys. J. C, in press.
5. G. Moortgat-Pick, H. Fraas, A. Bartl, W. Majerotto, hep-ph/9804306.