@article{MZM_2005_77_3_a3,
     author = {K. V. Kostousov and V. T. Shevaldin},
     title = {Approximation by local trigonometric splines},
     journal = {Matemati\v{c}eskie zametki},
     pages = {354--363},
     publisher = {mathdoc},
     volume = {77},
     number = {3},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2005_77_3_a3/}
}