Structural instability and superconductivity in Ba1-xKxBiO3 S. Zherlitsyn, B. Lüthi, V. Gusakov, B. Wolf, F. Ritter, D. Wichert, S. Barilo, S. Shiryaev, C. Escribe-Filippini and J. L. Tholence Eur. Phys. J. B, 16 1 (2000) 59-66 Published online: 15 July 2000 DOI: 10.1007/s100510070249