1. Possible highT c superconductivity in the Ba?La?Cu?O system
2. K. S. Bedell. D. Coffey, D. E. Meltzer, D. Pines and J. R. Schrieffer (Eds.) Proceedings of “High-Temperature Superconductivity symposium” Los Alamos (1989), Addison-Wesley, Redwood city, California (1990).
3. H. K. Onnes, Commun. Phy. Lab Univ. Ledin 123a (April 1911), Represented in Proc. K. Ned. Akad, Wet 14, 204 (1911).
4. F. A. Valencia et al., IEEE Trans. Magn. MAG-11, 221 (1975).
5. High Tc Superconductivity of La-Ba-Cu Oxides