@article{JETPL.98.700, title = {}, author = {Kulik, S. P. and Molotkov, S. N. and , }, journal = {JETP Lett.}, volume = {98}, issue = {10}, pages = {626}, year = {2013}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X13220098}, note = {[Pisma v ZhETF 98, 700 (2013)]} }