%0 Journal Article %A M. A. Krasnosel'skii %A V. S. Klimov %A E. A. Livshitz %T Convergence of positive functional and operators %J Doklady Akademii Nauk %D 1965 %P 258-261 %V 162 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1965_162_2_a3/ %G ru %F DAN_1965_162_2_a3