Michel
Dubois-Violette |
LPT,
Univ. Paris 11 |
Harald
Grosse |
Dept.
for Theoretical Physics,
Univ. of Wien |
Olaf
Lechtenfeld |
Inst.
Fur Theor. Physics,
Leibniz Universitat Hannover |
Jacques
Magnen |
CPHT,
Ecole Polytechnique |
Vincent
Rivasseau |
LPT,
Univ. Paris 11 |