@article{TIMB_2020_28_1_a0,
     author = {V. I. Bernik and E. V. Guseva and N. V. Sakovich},
     title = {Approximation of real numbers by},
     journal = {Trudy Instituta matematiki},
     pages = {3--10},
     year = {2020},
     volume = {28},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMB_2020_28_1_a0/}
}