Best approximation of partial differential operators
Matematičeskie zametki, Tome 46 (1989) no. 1, pp. 78-87
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@article{MZM_1989_46_1_a8,
author = {O. A. Timoshin},
title = {Best approximation of partial differential operators},
journal = {Matemati\v{c}eskie zametki},
pages = {78--87},
year = {1989},
volume = {46},
number = {1},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/MZM_1989_46_1_a8/}
}
O. A. Timoshin. Best approximation of partial differential operators. Matematičeskie zametki, Tome 46 (1989) no. 1, pp. 78-87. http://geodesic.mathdoc.fr/item/MZM_1989_46_1_a8/