TY - JOUR AU - V. I. Ruban TI - Diameters of sets in spaces of periodic functions. JO - Doklady Akademii Nauk PY - 1980 SP - 34 EP - 35 VL - 255 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1980_255_1_a6/ LA - ru ID - DAN_1980_255_1_a6 ER -