@article{PismaZhETF.5.384,
    title = {Negative Differential Conductivity (NDC) Connected with Acoustoelectric Current},
    author = {Zil'berman, P. E. and Epshtein, E. M.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {5},
    issue = {10},
    pages = {384},
    year = {1967},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_25207.shtml},
}