@article{MZM_2007_81_5_a7,
     author = {Yu. S. Kolomoitsev},
     title = {Completeness of the {Trigonometric} {System} for the {Classes~}$\varphi(L)$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {707--712},
     year = {2007},
     volume = {81},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2007_81_5_a7/}
}