@article{PismaZhETF.27.194,
    title = {Propagation of phonon pulses in the regime of spontaneous phonon decay},
    author = {Kazakovtsev, D. V. and Levinson, I. B.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {27},
    issue = {3},
    pages = {194},
    year = {1978},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23673.shtml},
}