@article{DAN_1975_221_3_a4,
     author = {I. V. Gel'man and V. G. Maz'ya},
     title = {On the dominance of differential operators with constant coefficients in a half-space},
     journal = {Doklady Akademii Nauk},
     pages = {528--531},
     year = {1975},
     volume = {221},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1975_221_3_a4/}
}