1. L.S. Fleishman, Y.A. Bashkirov, V.A. Aristeanu, Y. Brissette, J.R. Cave, IEEE Transactions on applied superconductivity, Vol. 3, No. 1, (1993) 570
2. S. Gauss, S. Elschner, H. Bestgen, Cryogenics 32 (1992) 965
3. J. Bock, H. Bestgen, S. Elschner, IEEE Transactions on appl. supercond., Vol. 3, No. 1, (1993) 1659 (1993)
4. J. Bock, S. Elschner, P. Herrmann, IEEE Transactions on appl. superconductivity, Proc. ASC ’94, Okt 1994, Boston, in press
5. P. Herrmann et al., Cryogenics, 33 (1993) 296