Electronic Resource
Keane, D.T.
;
Held, G.A.
;
Jordan-Sweet, J.L.
;
[et al.]
Shafer, M.W.
;
Horn, P.M.
;
Guntherodt, G.
;
Langen, J.
;
Weit, M.
;
Erle, A.
;
Zirngiebl, E.
;
Blumenroder, S.
Amsterdam
:
Elsevier
Physica C: Superconductivity and its applications
153-155 (1988), S. 594-597