@article{PismaZhETF.20.453,
    title = {Superheterodyne amplification of surface ultrasonic waves in a monolithic layered piezoelectric-semiconductor structure},
    author = {Kmita, A. M. and Kotelyanskii, I. M. and Medved', A. V. and Fedorets, V. N.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {20},
    issue = {7},
    pages = {453},
    year = {1974},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_27305.shtml},
}