@article{MZM_2009_86_4_a2,
     author = {V. P. Zastavnyi},
     title = {On {Series} {Arising} from the {Approximation} of {Periodic} {Differentiable} {Functions} by {Poisson} {Integrals}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {497--511},
     publisher = {mathdoc},
     volume = {86},
     number = {4},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2009_86_4_a2/}
}