@article{PismaZhETF.27.333,
    title = {Doubling of the sound frequency and acoustic detection in hematite},
    author = {Ozhogin, V. N. and Lebedev, A. Yu. and Yakubovskii, A. Yu.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {27},
    issue = {6},
    pages = {333},
    year = {1978},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23708.shtml},
}