TY - JOUR AU - S. N. Mergelyan TI - Certain classes of sets and their applications JO - Doklady Akademii Nauk PY - 1961 SP - 285 EP - 288 VL - 138 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1961_138_2_a9/ LA - ru ID - DAN_1961_138_2_a9 ER -