Unknown
Collier, R
;
Bachelet, F
;
Botrel, R
;
[et al.]
Breton, O
;
Chicanne, C
;
Dauteuil, C H
;
Durut, F
;
Fleury, E
;
Guillot, L
;
Hermerel, C
;
Jeannot, L
;
Legaie, O
;
Legay, G
;
Martin, M
;
Reneaume, B
;
Theobald, M
;
... and further 1
Institute of Physics