TY - JOUR AU - M. R. Langarshoev TI - The Exact Inequalities of Jackson--Stechkin Type and the Width Values for Some Classes of Functions in $L_{2}$ Space JO - Modelirovanie i analiz informacionnyh sistem PY - 2013 SP - 90 EP - 105 VL - 20 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MAIS_2013_20_5_a5/ LA - ru ID - MAIS_2013_20_5_a5 ER -