TY - JOUR AU - Zh. V. Zakharenko AU - A. I. Yablonskii TI - Qualitative investigation of a system of differential equations in the presence of an algebraic integral JO - Differencialʹnye uravneniâ PY - 1995 SP - 759 EP - 764 VL - 31 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1995_31_5_a3/ LA - ru ID - DE_1995_31_5_a3 ER -