TY - JOUR AU - R. M. Fedorov TI - Upper Bounds for the Number of Orbital Topological Types of Planar Polynomial Vector Fields ``Modulo Limit Cycles'' JO - Informatics and Automation PY - 2006 SP - 254 EP - 271 VL - 254 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TRSPY_2006_254_a11/ LA - ru ID - TRSPY_2006_254_a11 ER -