@article{JETPL.108.135,
    title = {},
    author = {},
    journal = {JETP Lett.},
    volume = {108},
    issue = {2},
    pages = {147},
    year = {2018},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_32865.shtml},
    note = {[Pisma v ZhETF 108, 135 (2018)]}
}