@article{JETPL.107.242, title = {}, author = {Khanin, Yu. N. and Vdovin, E. E. and , and , and , and , and , and , and , and Novoselov, K. S.}, journal = {JETP Lett.}, volume = {107}, issue = {4}, pages = {238}, year = {2018}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X18040070}, note = {[Pisma v ZhETF 107, 242 (2018)]} }