@article{IM2_1973_7_1_a7,
     author = {V. L. Velikin},
     title = {Precise approximation values by {Hermitian} splines on classes of differentiable function},
     journal = {Izvestiya. Mathematics },
     pages = {163--184},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {1973},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1973_7_1_a7/}
}