@article{PismaZhETF.17.124,
    title = {Low-temperature  Negative   Differential   Microwave   Conductivity  in Semiconductors   Following  Elastic Scattering of Electrons},
    author = {Andronov, A. A. and Kozlov, V. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {17},
    issue = {2},
    pages = {124},
    year = {1973},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23475.shtml},
}