Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1973_14_6_a17, author = {K. G. Inoyatova}, title = {Approximation of arithmetic sums by linear operators}, journal = {Matemati\v{c}eskie zametki}, pages = {925--936}, publisher = {mathdoc}, volume = {14}, number = {6}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1973_14_6_a17/} }
K. G. Inoyatova. Approximation of arithmetic sums by linear operators. Matematičeskie zametki, Tome 14 (1973) no. 6, pp. 925-936. http://geodesic.mathdoc.fr/item/MZM_1973_14_6_a17/