1. D. M. Ginzburg (ed.),Physical Properties of High-Temperature Superconductors [Russian translation], Mir, Moscow (1990).
2. G. P. Shveikin, V. A. Gubanov, A. A. Fotiev, et al., in:Electronic Structure and Physicochemical Properties of High-Temperature Superconductors [in Russian], Nauka, Moscow (1990).
3. L. F. Mattheiss, E. M. Gyorgy, and D. W Johnson,Phys. Rev. B137, 3745–3752 (1988).
4. R. J. Cava, B. Batlogg, and J. Krajewski,Nature,332, 409–415 (1988).
5. J. F. Dobson, A. E. Bocquet, P. C. Healy, et al.,Aust. J. Phys.,42, 409–413 (1939).