@article{DAN_1993_328_3_a5,
     author = {V. T. Shevaldin},
     title = {Interpolating periodic splines and widths of classes of functions},
     journal = {Doklady Akademii Nauk},
     pages = {296--298},
     publisher = {mathdoc},
     volume = {328},
     number = {3},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1993_328_3_a5/}
}