Voir la notice de l'article provenant de la source Math-Net.Ru
@article{TRSPY_1987_180_a88, author = {I. R. Liflyand}, title = {Sharp estimates of the {Lebesgue} constants of partial sums of multiple {Fourier} series}, journal = {Informatics and Automation}, pages = {151--152}, publisher = {mathdoc}, volume = {180}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a88/} }
I. R. Liflyand. Sharp estimates of the Lebesgue constants of partial sums of multiple Fourier series. Informatics and Automation, Theory of functions and related questions of analysis, Tome 180 (1987), pp. 151-152. http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a88/