@article{JETPL.110.268,
    title = {},
    author = {Van?kov, A. B. and Kaysin, B. D. and Kukushkin, I. V.},
    journal = {JETP Lett.},
    volume = {110},
    issue = {4},
    pages = {296},
    year = {2019},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X19160112},
    note = {[Pisma v ZhETF 110, 268 (2019)]}
}