Unknown
Kubo, S
;
Shimozuma, T
;
Yoshimura, Y
;
[et al.]
Notake, T
;
Idei, H
;
Inagaki, S
;
Yokoyama, M
;
Ohkubo, K
;
Kumazawa, R
;
Nakamura, Y
;
Saito, K
;
Seki, T
;
Mutoh, T
;
Watari, T
;
Narihara, K
;
Yamada, I
;
... and further 53
Institute of Physics