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Hacʿagorcyan, Z. A., Darbinyan, A. H., Hovumyan, N. G., Srvanjtyan, G. H. (1988) “{{{1}}}”, in Arešyan G. L. et al., editors, Ṙus-hayeren politexnikakan baṙaran [Russian–Armenian Polytechnic Dictionary], Yerevan: Haykakan sovetakan hanragitarani glxavor xmbagrutʿyun