Հոդված 1694 Sh.A. Tonoyan A.V. Asatryan D.L.Hayrapetyan Y.Sh. Mamasakhlisov V.F. Morozov Journal of Contemporary Physics (Armenian Academy of Sciences) 51, 1 93-98 2016 http://www.springer.com/physics/particle+and+nuclear+physics/journal/11958