Article 4997 G.E. Khachatryan N.V. Simonyan N.I. Mkrtchyan V.B. Arakelyan S.Sh. Tatikyan V.M. Tsakanov P.M. Antonyan S.K. Karamyan V.V. Harutyunyan Biological Journal of Armenia 68, 2 21-29 2016 http://www.flib.sci.am/eng/Biology/