TY - JOUR AU - A. G. Pogorelov TI - Partition of a set of approximate operators into simply ordered JO - Doklady Akademii Nauk PY - 1985 SP - 559 EP - 564 VL - 282 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1985_282_3_a11/ LA - ru ID - DAN_1985_282_3_a11 ER -