Electronic Resource
Lin, C.
;
Lu, G.
;
Wei, C.-D.
;
[et al.]
Liu, Z.-X.
;
Sun, Y.-X.
;
Lan, J.
;
Zhu, X.
;
Li, G.-Z.
;
Feng, S.-Q.
;
Dai, Y.-D.
;
Gan, Z.-Z.
Amsterdam
:
Elsevier
Physica C: Superconductivity and its applications
153-155 (1988), S. 190-191