Can fluctuation effects be observed in molecular superconductor and thirty-degree group metal oxides

Width of critical range in K3C60, Ba1-xKxBiO3, La2-xSrCuO4 and Nd2-xCexCuO4 superconductors is estimated on the basis of experimental data on critical fields, coherence lengthes and penetration depthes. Ginzburg numbers of those compounds are shown to be between 0.5x10-4 and (1-3)x10-3 (La and Nd cuprates), that is, fluctuation additions, for example, for heat capacity at Tc-T=1 K should constitute 5-15% of its jumpvalue