Comparative Description of the Microwave Surface Impedance of Nb, BaKBiO, and YBaCuO A.A. Golubov, M.R. Trunin, A.A. Zhukov, O.V. Dolgov and S.V. Shulga J. Phys. I France, 6 12 (1996) 2275-2290 Accepted: 03 June 1996 DOI: 10.1051/jp1:1996217