Characteristic problems with a principal part that contains mixed derivatives
Differencialʹnye uravneniâ, Tome 12 (1976) no. 2, pp. 309-324
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@article{DE_1976_12_2_a14,
author = {A. A. Iosif'yan},
title = {Characteristic problems with a principal part that contains mixed derivatives},
journal = {Differencialʹnye uravneni\^a},
pages = {309--324},
year = {1976},
volume = {12},
number = {2},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/DE_1976_12_2_a14/}
}
A. A. Iosif'yan. Characteristic problems with a principal part that contains mixed derivatives. Differencialʹnye uravneniâ, Tome 12 (1976) no. 2, pp. 309-324. http://geodesic.mathdoc.fr/item/DE_1976_12_2_a14/