@article{JETPL.103.780, title = {}, author = {Zobov, V. E. and , }, journal = {JETP Lett.}, volume = {103}, issue = {11}, pages = {687}, year = {2016}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X16110059}, note = {[Pisma v ZhETF 103, 780 (2016)]} }