1. H. Maeda, Y. Tanaka, M. Fukutomi and T. Asano, Japan, J. Appl. Phys. Letters, to be published.
2. C.E. Rice, A.F.J. Levi, R.M. Fleming, P. Marsh, K.W. Baldwin, M. Anzlowar, A.E. White, K.T. Short, S. Nakahara and H.L. Störmer, Appl. Phys. Letters, to be published.
3. C.R. Guarnieri, R.A. Roy, K.L. Seanger, S.A. Shivashankar, D.C. Yee and J.J. Cuomo, Appl. Phys. Letters, submitted.
4. A New High-Temperature Superconductor: Bi
2
Sr
3-x
Ca
x
Cu
2
O
8+y