1. J. Tenbrink, M. Wilhelm, K. Heine and H. Krauth,IEEE Trans. Mag. 27, 1239 (1991).
2. W. Paul and Th. Baumann,Physica C 175, 102 (1991).
3. J. Bock, E. Preisler,High-Temperature Superconductors: Materials Aspects, eds. H.C. Freyhardt, R. Flükiger and M. Peuckert (DGM Oberursel 1991), pp. 215–226.
4. W. Paul, B. Heeb, Th. Baumann, M. Guidolin and L.J. Gauckler,Layered Superconductors: Fabrication, Properties and Applications, MRS Symp. Proc. 275, eds D.T. Shaw, C.C. Tsuei, T.R. Schneider and Y. Shiohara (MRS Pittsburgh 1992), pp. 383–387.
5. J. Kase, T. Morimoto, K. Togano, H. Kumakura, D.R. Dietderich and H. Maeda,IEEE Trans. Mag. 27, 1254 (1991).