Electronic Resource
Guang-hou, W.
;
Hai, S.
;
Guo-giang, P.
;
[et al.]
Ling, C.
;
Lie, D.
;
De-xun, S.
;
Ming-kang, T.
;
Siang-jin, L.
;
She-ing, H.
;
Tong-zhen, J.
;
Jing-tian, L.
;
Ke-ming, W.
;
Yi-hua, W.
Amsterdam
:
Elsevier
Nuclear Inst. and Methods in Physics Research, B
33 (1988), S. 760-764