Electronic Resource
Lu, D.F.
;
Fan, C.-x.
;
Alzayed, N.S.
;
[et al.]
Wong, K.W.
;
Han, S.G.
;
Ruan, J.Z.
;
Xin, Y.
;
Xu, B.
;
Knapp, D.E.
;
Chester, M.
Amsterdam
:
Elsevier
Physica C: Superconductivity and its applications
235-240 (1994), S. 3361-3362