@article{DAN_1962_144_1_a11,
     author = {P. P. Mosolov},
     title = {Differential properties of the solutions of stable hypoelliptic equations},
     journal = {Doklady Akademii Nauk},
     pages = {44--47},
     year = {1962},
     volume = {144},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_144_1_a11/}
}