TY - JOUR AU - M. K. Potapov AU - F. M. Berisha TI - On the Connection Between the Best Approximation by Algebraic Polynomials and the Modulus of Smoothness of Order~$r$ JO - Contemporary Mathematics. Fundamental Directions PY - 2007 SP - 149 EP - 164 VL - 25 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMFD_2007_25_a11/ LA - ru ID - CMFD_2007_25_a11 ER -