@article{TM_1987_180_a109,
     author = {M. K. Potapov},
     title = {On the approximation of functions by algebraic polynomials},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {182--184},
     publisher = {mathdoc},
     volume = {180},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1987_180_a109/}
}