@article{VMUMM_1984_4_a23,
     author = {E. A. Kolesnikova},
     title = {Subelliptic estimates for a problem with directional derivative in $L^p$},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {87--89},
     publisher = {mathdoc},
     number = {4},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1984_4_a23/}
}