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@article{MZM_1988_43_6_a4, author = {V. I. Ivanov}, title = {Approximation of functions from $C^r$ by splines of minimal defect}, journal = {Matemati\v{c}eskie zametki}, pages = {746--756}, publisher = {mathdoc}, volume = {43}, number = {6}, year = {1988}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1988_43_6_a4/} }
V. I. Ivanov. Approximation of functions from $C^r$ by splines of minimal defect. Matematičeskie zametki, Tome 43 (1988) no. 6, pp. 746-756. http://geodesic.mathdoc.fr/item/MZM_1988_43_6_a4/