Affiliation: | (1) INFM - Dept. of Nuclear and Theoretical Physics, University of Pavia, via Bassi, 6 - 27100 Pavia, Italy (Fax: +39-382/526938, E-mail: bertoni@pavia.infn.it), IT;(2) INFM - Dept. of Electronics, University of Pavia, via Ferrata, 1 -27100 Pavia, Italy (Fax: +39-382/422583, E-mail: realilab@dragon.ian.pv.cnr.it), IT |