@article{ISU_2013_13_4_a5,
     author = {L. P. Dobrovolskaya and M. N. Dobrovolsky and N. M. Dobrovol'skii and N. N. Dobrovol'skii and I. Y. Rebrova},
     title = {Some questions of number-theoretical method in approximation analysis},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {47--52},
     publisher = {mathdoc},
     volume = {13},
     number = {4},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2013_13_4_a5/}
}