%0 Journal Article %A O. V. Besov %T Estimates of derivatives in a mixed $L_p$-norm on a domain and an extension of functions %J Matematičeskie zametki %D 1970 %P 147-154 %V 7 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1970_7_2_a1/ %G ru %F MZM_1970_7_2_a1