Author information:

Name:        Fabrizio Fioravanti
Address:     Via Grazia Deledda, 20
ZIP:         50018
Town:        Scandicci (Firenze)
Country:     Italy

Tel (Voice): +39 (55) 253252

E-mail: fiora@mcculloch.ing.unifi.it
        trol@aguirre.ing.unifi.it


IEEE      member (Institute of Electrical and Electronics Engineers)
AEI       member (Italian Association for Electrotecnic and Electronic)
ANIPLA    member (Italian National Association for Automation)
Tean OS/2 member