@article{DAN_1961_140_4_a9,
     author = {R. M. Trigub},
     title = {Approximation of functions by polynomials with integral coefficients},
     journal = {Doklady Akademii Nauk},
     pages = {773--775},
     publisher = {mathdoc},
     volume = {140},
     number = {4},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_140_4_a9/}
}