Electronic Resource
Graham, W.G.
;
Bernstein, E.M.
;
Clark, M.W.
;
[et al.]
Tanis, J.A.
;
Berkner, K.H.
;
McDonald, R.J.
;
Schlachter, A.S.
;
Stearns, J.W.
;
Muller, A.
;
Stockli, M.P.
;
McFarland, R.H.
;
Morgan, T.J.
Amsterdam
:
Elsevier
Nuclear Inst. and Methods in Physics Research, B
23 (1987), S. 143-146