@article{PismaZhETF.46.273,
    title = {Anomalies in the velocity of sound and in the elastic moduli near the superconducting transition of the ceramic $YBa_2Cu_3O_7$},
    author = {Golovashkin, A. I. and Danilov, V. A. and Ivanenko, O. M. and Mitsen, K. V. and Perepechko, I. I.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {46},
    issue = {7},
    pages = {273},
    year = {1987},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_18581.shtml},
}