TY - JOUR AU - P. P. Belinskii TI - The use of the variation method in solving extremum problems of quasiconformal mappings JO - Doklady Akademii Nauk PY - 1958 SP - 199 EP - 201 VL - 121 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1958_121_2_a0/ LA - ru ID - DAN_1958_121_2_a0 ER -