@article{DAN_1961_140_1_a5,
     author = {E. A. Gorin},
     title = {Partially hypo-elliptic equations and polynomials},
     journal = {Doklady Akademii Nauk},
     pages = {27--28},
     publisher = {mathdoc},
     volume = {140},
     number = {1},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_140_1_a5/}
}