Unknown
Watari, T
;
Mutoh, T
;
Kumazawa, R
;
[et al.]
Seki, T
;
Saito, K
;
Torii, Y
;
Zhao, Yan Ping
;
Hartmann, D
;
Idei, H
;
Kubo, S
;
Ohkubo, K
;
Sato, M
;
Shimozuma, T
;
Yoshimura, Y
;
Ikeda, K
;
Kaneko, O
;
... and further 72
Institute of Physics