@article{IVM_2014_11_a1,
     author = {B. V. Vinnitskii and V. N. Dilnyi},
     title = {On approximation properties of one trigonometric system},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {13--25},
     publisher = {mathdoc},
     number = {11},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2014_11_a1/}
}