@article{DAN_1974_215_3_a2,
     author = {Yu. A. Brudnyi},
     title = {Spline approximation, and functions of bounded variation},
     journal = {Doklady Akademii Nauk},
     pages = {511--513},
     publisher = {mathdoc},
     volume = {215},
     number = {3},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_215_3_a2/}
}