Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_2013_93_4_a15, author = {A. V. Politov}, title = {A {Convergence} {Criterion} for {Orthorecursive} {Expansions} in {Euclidean} {Spaces}}, journal = {Matemati\v{c}eskie zametki}, pages = {637--640}, publisher = {mathdoc}, volume = {93}, number = {4}, year = {2013}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_2013_93_4_a15/} }
A. V. Politov. A Convergence Criterion for Orthorecursive Expansions in Euclidean Spaces. Matematičeskie zametki, Tome 93 (2013) no. 4, pp. 637-640. http://geodesic.mathdoc.fr/item/MZM_2013_93_4_a15/