1. For a review of superconducting electronics with many detailed references, see T. Van Duzer, Superconductor electronics 1986-1996;IEEE Trans. Appl. Supercond.,1997
2. The classic text on superconducting electronics: T. Van Duzer and C. W. Turner,1981
3. Another good text on superconductive electronics is K. K. Likharev,1986
4. Possible high Tc superconductivity in the Ba-La-Cu-O system;Bednorz;Z. Phys. B. Condens. Matter,1986
5. For a good introduction to superconductivity at the undergraduate level, see R. P. Feynman, R. B. Leighton, and M. Sands The Feynman Lectures on Physics