1. Possible highT c superconductivity in the Ba?La?Cu?O system
2. Superconductivity at 93 K in a new mixed-phase Y-Ba-Cu-O compound system at ambient pressure
3. Onset of superconductivity in Y-Ba-Cu-O at 100 K
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5. P.M. Grant, R.B. Beyers, E.M. Engler, G. Lim, S.S.P. Parkin M.L. Tamierez, V.Y. Lee, A. Nazzal, J.E. Vazquez and R.J. Savoy, preprint.