@article{DAN_1974_214_5_a9,
     author = {G. G. Kazaryan},
     title = {On hypoelliptic polynomials},
     journal = {Doklady Akademii Nauk},
     pages = {1016--1019},
     publisher = {mathdoc},
     volume = {214},
     number = {5},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_214_5_a9/}
}