@article{DAN_1981_258_4_a8,
     author = {Yu. A. Arkhangel'skii},
     title = {A new property of {Euler{\textendash}Poisson} equations},
     journal = {Doklady Akademii Nauk},
     pages = {810--811},
     year = {1981},
     volume = {258},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1981_258_4_a8/}
}