Հոդված 3362 A.S. Nikoghosyan R.M.Martirosyan H. Ting J. Shen M. Yu. Tunyan А. V. Papikyan А. А. Papikyan Journal of Contemporary Physics (Armenian Academy of Sciences) Vol. 51, No. 3, pp. 256–264 2016 http://www.springer.com/physics/particle+and+nuclear+physics/journal/11958