@article{PismaZhETF.27.101,
    title = {Zero-gap state and phonon spectrum of the system of narrow-band compounds $Pb_{1-x}Sn_xSe$},
    author = {Vodop'yanov, L. K. and Kucherenko, I. V. and Shotov, A. P. and Scherm, R.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {27},
    issue = {2},
    pages = {101},
    year = {1978},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23648.shtml},
}