TY - JOUR AU - Yurii N. Subbotin TI - One-sided widths of classes of smooth functions JO - Ural mathematical journal PY - 2015 SP - 83 EP - 86 VL - 1 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/UMJ_2015_1_1_a7/ LA - en ID - UMJ_2015_1_1_a7 ER -