Representation of periodic analytic functions by a sum of squares
Doklady Akademii Nauk, Tome 165 (1965) no. 1, pp. 40-43
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@article{DAN_1965_165_1_a10,
author = {S. L. Sobolev},
title = {Representation of periodic analytic functions by a sum of squares},
journal = {Doklady Akademii Nauk},
pages = {40--43},
publisher = {mathdoc},
volume = {165},
number = {1},
year = {1965},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/DAN_1965_165_1_a10/}
}
S. L. Sobolev. Representation of periodic analytic functions by a sum of squares. Doklady Akademii Nauk, Tome 165 (1965) no. 1, pp. 40-43. http://geodesic.mathdoc.fr/item/DAN_1965_165_1_a10/