@article{PismaZhETF.12.521,
    title = {"Turning" of Current-voltage Characteristic of Germanium in a Strong Field},
    author = {Veselago, V. G. and Glushkov, M. V. and Leonov, Yu. S and Shotov, A. P.},
    journal = {Письма в ЖЭТФ},
    volume = {12},
    issue = {11},
    pages = {521},
    year = {1970},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26375.shtml},
}