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@article{DAN_1982_263_2_a4, author = {Yu. I. Volkov}, title = {On approximation operators generated by nonnegative measures}, journal = {Doklady Akademii Nauk}, pages = {280--282}, publisher = {mathdoc}, volume = {263}, number = {2}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1982_263_2_a4/} }
Yu. I. Volkov. On approximation operators generated by nonnegative measures. Doklady Akademii Nauk, Tome 263 (1982) no. 2, pp. 280-282. http://geodesic.mathdoc.fr/item/DAN_1982_263_2_a4/