Unknown
Matsuoka, K
;
Yamada, H
;
Iguchi, H
;
[et al.]
Ida, K
;
Morita, S
;
Okamura, S
;
Nishimura, K
;
Sanuki, H
;
Itoh, K
;
Akiyama, R
;
Arimoto, H
;
Hanatani, K
;
Hosokawa, M
;
Idei, H
;
Kaneko, O
;
Kubo, S
;
... and further 13
Institute of Physics