@article{ZNSL_2017_456_a4,
     author = {O. L. Vinogradov and A. V. Gladkaya},
     title = {Sharp estimates of linear approximations by nonperiodic splines in terms of linear combinations of moduli of continuity},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {55--76},
     publisher = {mathdoc},
     volume = {456},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2017_456_a4/}
}