Unknown
Abad, E
;
Arredondo, I
;
Badillo, I
;
[et al.]
Belver, D
;
Bermejo, F J
;
Bustinduy, I
;
Cano, D
;
Cortazar, D
;
de Cos, D
;
Djekic, S
;
Domingo, S
;
Echevarria, P
;
Eguiraun, M
;
Etxebarria, V
;
Fernandez, D
;
Fernandez, F J
;
... and further 20
Institute of Physics