On solvability conditions for equations with double characteristics
Doklady Akademii Nauk, Tome 234 (1977) no. 2, pp. 280-282
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@article{DAN_1977_234_2_a4,
author = {Yu. V. Egorov},
title = {On solvability conditions for equations with double characteristics},
journal = {Doklady Akademii Nauk},
pages = {280--282},
publisher = {mathdoc},
volume = {234},
number = {2},
year = {1977},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/DAN_1977_234_2_a4/}
}
Yu. V. Egorov. On solvability conditions for equations with double characteristics. Doklady Akademii Nauk, Tome 234 (1977) no. 2, pp. 280-282. http://geodesic.mathdoc.fr/item/DAN_1977_234_2_a4/