@article{JETPL.100.83, title = {}, author = {Frank, A. G. and , }, journal = {JETP Lett.}, volume = {100}, issue = {2}, pages = {75}, year = {2014}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X14140021}, note = {[Pisma v ZhETF 100, 83 (2014)]} }