@article{JETPL.106.780,
    title = {},
    author = {Mavrogordatos, Th. K.},
    journal = {JETP Lett.},
    volume = {106},
    issue = {12},
    pages = {815},
    year = {2017},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X17240110},
    note = {[Pisma v ZhETF 106, 780 (2017)]}
}