Статья 1341 Sh.A. Tonoyan A.V. Asatryan Mirtavoosi Saadat Y.Sh. Mamasakhlisov V.F. Morozov Journal of Contemporary Physics (Armenian Academy of Sciences) 50, 4 375-380 2015 http://www.springer.com/physics/particle+and+nuclear+physics/journal/11958