%0 Journal Article %A M. Sh. Tsalenko %T Functors between structured categories %J Sbornik. Mathematics %D 1969 %P 497-513 %V 9 %N 4 %U http://geodesic.mathdoc.fr/item/SM_1969_9_4_a5/ %G en %F SM_1969_9_4_a5