1. J.G. Bednortz et al.,Z. Phys. B-Cond. Mater.
64, 189 (1986)
2. Crystal Structures of the High-Tc Superconducting Copper-Oxides. In Physica C, eds H. Shaked, P. M. Keane, J. C. Rodriguez, F. F. Owen, R. L. Hitterman, J. D. Jorgensen. Special edition, Elsevier Scientific, B. V., Amsterdam (1994)
3. Physical Properties of High Temperature Superconductors, ed. D. M. Ginsberg, World Scientific, Singapore (1988)
4. S. Kambe, T. Matsuoka, M. Takahashi, M. Kawai and T. Kawai, Phys. Rev. B
42, 2669 (1990)
5. S. Kambe, M. Kawai and T. Kawai, Solid State Commun.
75, 435 (1990)