@article{MZM_2020_108_2_a12,
     author = {M. G. Grigoryan},
     title = {Universal {Fourier} {Series}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {296--299},
     publisher = {mathdoc},
     volume = {108},
     number = {2},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2020_108_2_a12/}
}