@article{PismaZhETF.26.538,
    title = {Appearance of combination frequencies in the Shubnikov-de Haas oscillations and in oscillations of the surface impedance of doped Bi tellurium and $Bi_{1-x}Sb_x$ alloys},
    author = {Moshchalkov, V. V. and Mironova, G. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {26},
    issue = {7},
    pages = {538},
    year = {1977},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_20944.shtml},
}