Electronic Resource
Syassen, K.
;
Hanfland, M.
;
Strossner, K.
;
[et al.]
Holtz, M.
;
Kress, W.
;
Cardona, M.
;
Schroder, U.
;
Prade, J.
;
Kulkarni, A.D.
;
de Wette, F.W.
Amsterdam
:
Elsevier
Physica C: Superconductivity and its applications
153-155 (1988), S. 264-265