%0 Journal Article %A A. V. Pokrovskii %T Mean value theorems for solutions of linear partial differential equations %J Matematičeskie zametki %D 1998 %P 260-272 %V 64 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1998_64_2_a12/ %G ru %F MZM_1998_64_2_a12