@article{MZM_2004_76_1_a10,
     author = {V. N. Rusak and I. V. Rybachenko},
     title = {The {Properties} of {Functions} and {Approximation} by {Summation} {Rational} {Operators} on the {Real} {Axis}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {111--118},
     publisher = {mathdoc},
     volume = {76},
     number = {1},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2004_76_1_a10/}
}