Anomalies of attenuation and phase velocity of surface acoustic waves in YBa2Cu3O7-8 thin films in the vicinity of TcM. Stenger, S. Baumhoff, J.-Y. Prieur, J. Joffrin and J.-P. ContourEur. Phys. J. B, 2 2 (1998) 177-182DOI: https://doi.org/10.1007/s100510050238