[1] UNIV BARI,BARI,ITALY
[2] UNIV GLASGOW,GLASGOW G61 1BD,LANARK,SCOTLAND
[3] UNIV GRP PRAHA,PRAGUE,CZECH REPUBLIC
[4] INST PHYS EXPTL,KOSICE,SLOVAKIA
[5] GHS WUPPERTAL,WUPPERTAL,GERMANY
[6] CANBERRA SEMICOND NV,CANBERRA,ACT,AUSTRALIA
[7] GEC MARCONI LTD,CASWELL,NORTHANTS,ENGLAND