Bulletin of the Lebedev Physics Institute
Bulletin of the Lebedev Physics Institute > 2011 > 38 > 10 > 291-296
Bulletin of the Lebedev Physics Institute > 2014 > 41 > 12 > 359-363
Bulletin of the Lebedev Physics Institute > 2015 > 42 > 6 > 165-168
Bulletin of the Lebedev Physics Institute > 2016 > 43 > 11 > 336-339