Voir la notice de l'article provenant de la source Math-Net.Ru
@article{TRSPY_1959_53_a6, author = {V. P. Il'in}, title = {On a theorem of {G.\,H.~Hardy} and {J.\,E.~Littlewood}}, journal = {Informatics and Automation}, pages = {128--144}, publisher = {mathdoc}, volume = {53}, year = {1959}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1959_53_a6/} }
V. P. Il'in. On a theorem of G.\,H.~Hardy and J.\,E.~Littlewood. Informatics and Automation, The works on the approximate analysis, Tome 53 (1959), pp. 128-144. http://geodesic.mathdoc.fr/item/TRSPY_1959_53_a6/