%0 Journal Article %A M. F. Timan %A T. N. Semirenko %T Constructive characteristics of the properties of Kernels of integral operators and the behavior of their $s$-numbers %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1987 %P 217-219 %V 180 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1987_180_a133/ %G ru %F TM_1987_180_a133