@article{JETPL.109.835,
    title = {},
    author = {Kozlov, D. A. and ,  and Mikhailov, N. N. and Dvoretsky, S. A. and , },
    journal = {JETP Lett.},
    volume = {109},
    issue = {12},
    pages = {799},
    year = {2019},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X19120075},
    note = {[Pisma v ZhETF 109, 835 (2019)]}
}