[1] UNIV ALBERTA,DEPT PHYS,EDMONTON T6G 2J1,ALBERTA,CANADA
[2] CENS,NATL SATURNE LAB,F-91191 GIF SUR YVETTE,FRANCE
[3] CENS,SERV PHYS NUCL HAUTE ENERGIE,F-91191 GIF SUR YVETTE,FRANCE
[4] UNIV WESTERN CAPE,BELLVILLE 7530,SOUTH AFRICA
[5] UNIV PETR & MINERALS,DHAHRAN 31261,SAUDI ARABIA