%0 Journal Article %A N. A. Davydov %T Generalization of Mercer's theorem %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1965 %V 20 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1965_20_6_a10/ %G ru %F RM_1965_20_6_a10