TY - JOUR AU - A. I. Plotkin TI - Isometric operators in spaces of summable analytic and harmonic functions JO - Doklady Akademii Nauk PY - 1969 SP - 995 EP - 997 VL - 185 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1969_185_5_a6/ LA - ru ID - DAN_1969_185_5_a6 ER -