%0 Journal Article %A V. P. Il'in %T Conditions of validity of inequalities between $L_{p}$-norms of partial derivatives of functions of several variables %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1968 %P 205-242 %V 96 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1968_96_a16/ %G ru %F TM_1968_96_a16