TY - JOUR AU - M. V. Strekopytova TI - Investigation of a linear system on a plane JO - Differencialʹnye uravneniâ PY - 1997 SP - 709 EP - 711 VL - 33 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1997_33_5_a23/ LA - ru ID - DE_1997_33_5_a23 ER -