1. S. Foner, “Colloq. Int. CNRS” No. 242 (1975), pp.423–429.
2. Source references for these materials are: Nb-Sn: S. Foner and E.J. McNiff, Jr., Solid State Commun. 39:959–964 (1981);
3. Nb-Ge-Al: S. Foner, E.J. McNiff, Jr., B.J. Matthias, T.H. Geballe, R.H. Willens, and E. Corenzwit, “Proceedings 11th International Conference on Low Temperature Physics”, University of St. Andrews, Scotland (1968) Eds. J.F.Allen, D.M. Finlayson, and D.M. McCall, Vol.11, pp.1025–1032 and Phys. Lett. 31A:349–350 (1970);
4. Nb3Al: S. Foner, E.J. McNiff, Jr., T.H. Geballe, R.H. Willens, and E. Buehler, Physica 55:534–539 (1971);
5. Pub. No. 72CH-0682–5-TABSC;S Foner,1972