Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1993_54_5_a15, author = {A. V. Reztsov}, title = {Nonnegative trigonometric polynomials with spherical spectrum}, journal = {Matemati\v{c}eskie zametki}, pages = {149--152}, publisher = {mathdoc}, volume = {54}, number = {5}, year = {1993}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1993_54_5_a15/} }
A. V. Reztsov. Nonnegative trigonometric polynomials with spherical spectrum. Matematičeskie zametki, Tome 54 (1993) no. 5, pp. 149-152. http://geodesic.mathdoc.fr/item/MZM_1993_54_5_a15/