@article{PismaZhETF.25.513,
    title = {Investigation of acoustic activity in crystals by the method of Bragg  reflection of light},
    author = {Bryzhina, M. F. and Esayan, S. Kh. and Lemanov, V. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {25},
    issue = {11},
    pages = {513},
    year = {1977},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_21474.shtml},
}