Unknown
Shinohara, K
;
Takechi, M
;
Ishikawa, M
;
[et al.]
Kusama, Y
;
Tsuzuki, K
;
Urata, K
;
Kawashima, H
;
Tobita, K
;
Fukuyama, A
;
Cheng, C Z
;
Darrow, D S
;
Kramer, G J
;
Gorelenkov, N N
;
Nazikian, R
;
Todo, Y
;
Miura, Y
;
... and further 1
Institute of Physics