@article{VMUMM_1986_6_a16,
     author = {A. A. Efimov},
     title = {Approximation of continuous functions by {Riesz} means},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {67--70},
     year = {1986},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1986_6_a16/}
}