@article{JETPL.99.395,
    title = {},
    author = {Chaplik, A. V.},
    journal = {JETP Lett.},
    volume = {99},
    issue = {6},
    pages = {346},
    year = {2014},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X14060083},
    note = {[Pisma v ZhETF 99, 395 (2014)]}
}