TY - JOUR AU - V. N. Gorbuzov TI - Qualitative investigation in the large of a system in the case of a pole at infinity JO - Differencialʹnye uravneniâ PY - 1982 SP - 748 EP - 753 VL - 18 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1982_18_5_a2/ LA - ru ID - DE_1982_18_5_a2 ER -