@article{PismaZhETF.19.279,
    title = {Oscillations of the phase of the order parameter upon propagation of sound in a superconductor},
    author = {Vardanyan, R. A. and Lisitsyn, S. G.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {19},
    issue = {5},
    pages = {279},
    year = {1974},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26989.shtml},
}