@article{SM_2001_192_1_a5,
     author = {A. I. Stepanets},
     title = {Solution of the {Kolmogorov{\textendash}Nikol'skii} problem for {the~Poisson} integrals of continuous functions},
     journal = {Sbornik. Mathematics},
     pages = {113--139},
     year = {2001},
     volume = {192},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2001_192_1_a5/}
}