Davis, D. R. (Planetary Science Inst. Tucson, AZ, United States)
Farinella, P. (Pisa Univ. Italy)
Paolicchi, P. (Pisa Univ. Italy)
Bagatin, A. C. (Pisa Univ. Italy)
Cellino, A. (Osservatorio Astronomico Turin, Italy)
Zappala, E. (Osservatorio Astronomico Turin, Italy)