@article{TIMM_2001_7_1_a14,
     author = {Yu. N. Subbotin and S. A. Telyakovskii},
     title = {Splines and relative widths of classes of differentiable functions},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {208--216},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2001_7_1_a14/}
}