@article{DAN_1966_166_5_a1,
     author = {M. B. Aksen' and A. H. Turetzkii},
     title = {On best quadrature formulae for certain classes of functions},
     journal = {Doklady Akademii Nauk},
     pages = {1019--1021},
     publisher = {mathdoc},
     volume = {166},
     number = {5},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1966_166_5_a1/}
}