%0 Journal Article %A E. A. Kolesnikova %T Subelliptic estimates for a problem with directional derivative in $L^p$ %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1984 %P 87-89 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1984_4_a23/ %G ru %F VMUMM_1984_4_a23