@article{MZM_1984_36_3_a5,
     author = {M. S. Bespalov},
     title = {Fourier coefficients and the approximation of functions by series in a periodic multiplicative system},
     journal = {Matemati\v{c}eskie zametki},
     pages = {329--340},
     publisher = {mathdoc},
     volume = {36},
     number = {3},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1984_36_3_a5/}
}