@article{TM_1995_210_a9,
     author = {V. P. Motornyi and O. V. Motornaya},
     title = {Best average approximation of the classes of differentiable functions by algebraic polynomials},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {171--188},
     publisher = {mathdoc},
     volume = {210},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1995_210_a9/}
}