TY - JOUR AU - P. I. Lizorkin TI - On the closure of the set of compactly supported functions in the weighted space $W^l_{p,\Phi}$ JO - Doklady Akademii Nauk PY - 1978 SP - 789 EP - 792 VL - 239 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1978_239_4_a9/ LA - ru ID - DAN_1978_239_4_a9 ER -