TY - JOUR AU - P. I. Lizorkin TI - Description of the spaces $L_p^r(R^n)$ in terms of singular difference integrals JO - Sbornik. Mathematics PY - 1970 SP - 77 EP - 89 VL - 10 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1970_10_1_a5/ LA - en ID - SM_1970_10_1_a5 ER -