TY - JOUR AU - V. E. Maiorov TI - Various widths of the class $H_p^r$ in the space~$L_q$ JO - Izvestiya. Mathematics PY - 1979 SP - 73 EP - 87 VL - 13 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM2_1979_13_1_a4/ LA - en ID - IM2_1979_13_1_a4 ER -