Proofs not corrected by the authors On the phase diagram of the superconducting ceramics 123 Yu. S. Netchaev, Yu. A. Minaev, L. A. Andreev, K. N. Zhangozin, D. B. Kargin, N. G. Konovalov et W. A. Lyhin J. Phys. III France, 1 10 (1991) 1663-1668 DOI: 10.1051/jp3:1991219