@article{DAN_1981_261_1_a7,
     author = {A. I. Stepanets},
     title = {Sharp estimates of {Fourier} coefficients on classes of continuous and differentiable periodic functions of several variables},
     journal = {Doklady Akademii Nauk},
     pages = {34--38},
     publisher = {mathdoc},
     volume = {261},
     number = {1},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1981_261_1_a7/}
}