1. Possible highT c superconductivity in the Ba?La?Cu?O system
2. Susceptibility Measurements Support High-
T
c
Superconductivity in the Ba-La-Cu-O System
3. K. Kishio, K. Kitazawa, N. Sugii, S. Kanbe, K. Fueki, H. Takagi and S. Tanaka, Chem. Lett., submitted; K. Kishio, K. Kitazawa, S. Kanabe, I. Yasuda, N. Sugii, H. Takagi, S. Uchida, K. Fueki and S. Tanaka, Chem. Lett., accepted.
4. S. Kanabe, K. Kishio, K. Kitazawa, K. Fueki, H. Takagi and S. Tanaka, Chem. Lett., submitted.
5. L.F. Mattheiss, Phys. Rev. Lett., submitted.