TY - JOUR AU - Yu. S. Ilyashenko TI - Limit cycles of polynomial vector fields with nondegenerate singular points on the real plane JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1984 SP - 32 EP - 42 VL - 18 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1984_18_3_a2/ LA - ru ID - FAA_1984_18_3_a2 ER -