G. Bozzi
To appear in the proceedings of 15th International Conference on
Supersymmetry and the Unification of Fundamental Interactions
(SUSY07), Karlsruhe, Germany, 26 Jul - 1 Aug 2007
KA-TP-26-2007
erhältlich unter 0710.2422
Veröffentlicht in Nuovo Cimento B 123, 06-07, 772-774 (2008)