@article{JETPL.109.84,
    title = {},
    author = {Delev, V. A. and ,  and ,  and ,  and Ekomasov, E. G.},
    journal = {JETP Lett.},
    volume = {109},
    issue = {2},
    pages = {87},
    year = {2019},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X19020036},
    note = {[Pisma v ZhETF 109, 84 (2019)]}
}