1. B.B. Goodman, Rep. Prog. Phys., 29 445 (1966).
2. P.G. deGennes, “Superconductivity of Metals and Alloys”, Benjamin, New York (1966).
3. D. Saint-James, G. Sarma and E.J. Thomas, “Type II Superconductivity”, Pergamon, Oxford (1969).
4. R.D. Parks (Ed), “Superconductivity”, Dekker, New York (1969).
5. J.D. Livingston and H.W. Schadler, Prog. Mater. Sci., 12, 183 (1964).