@article{JETPL.102.780, title = {}, author = {, and Agladze, K. I.}, journal = {JETP Lett.}, volume = {102}, issue = {10}, pages = {688}, year = {2015}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X15220117}, note = {[Pisma v ZhETF 102, 780 (2015)]} }