TY - JOUR AU - A. S. Romanyuk TI - Best $M$-term trigonometric approximations of Besov classes of periodic functions of several variables JO - Izvestiya. Mathematics PY - 2003 SP - 265 EP - 302 VL - 67 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM2_2003_67_2_a3/ LA - en ID - IM2_2003_67_2_a3 ER -