@article{DAN_1960_132_2_a15,
     author = {R. M. Trigub},
     title = {Approximation of functions with a given modulus of smoothness on the exterior of a segment and on a half-axis},
     journal = {Doklady Akademii Nauk},
     pages = {303--306},
     year = {1960},
     volume = {132},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_132_2_a15/}
}