@article{JETPL.102.380, title = {}, author = {, and Tarasenko, A. S. and Tarasenko, S. V. and Shavrov, V. G.}, journal = {JETP Lett.}, volume = {102}, issue = {6}, pages = {343}, year = {2015}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X15180058}, note = {[Pisma v ZhETF 102, 380 (2015)]} }