V. Sh. Shekhtman (ed.) The real structure of high‐Tc superconductors. Springer series in materials science, Springer, Springer‐Verlag, 1993; 189 Seiten, 107 Abbildungen, 4 Tabellen, ISBN 3‐540‐56559‐0 (Berlin). ISBN 0‐387‐56559‐0 (New York). DM 138.00