Unknown
Gorla, P
;
Alessandria, F
;
Ardito, R
;
[et al.]
Arnaboldi, C
;
Artusa, D R
;
Avignone, F T
;
Balata, M
;
Bandac, I
;
Barucci, M
;
Beeman, J W
;
Bellini, F
;
Brofferio, C
;
Bucci, C
;
Capelli, S
;
Carbone, L
;
Cebrian, S
;
... and further 46
Institute of Physics