%0 Journal Article %A Yu. V. Bondarenko %T Invariance of quasiconcave functions cone under the action of positive operators %J Modelirovanie i analiz informacionnyh sistem %D 2008 %P 23-30 %V 15 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAIS_2008_15_4_a2/ %G ru %F MAIS_2008_15_4_a2