@article{JETPL.104.187, title = {}, author = {Alisultanov, Z. Z.}, journal = {JETP Lett.}, volume = {104}, issue = {3}, pages = {188}, year = {2016}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X16150091}, note = {[Pisma v ZhETF 104, 187 (2016)]} }