TY - JOUR AU - Yu. S. Ilyashenko TI - Divergence of series reducing an analytic differential equation to linear normal form at a singular point JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1979 SP - 87 EP - 88 VL - 13 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1979_13_3_a15/ LA - ru ID - FAA_1979_13_3_a15 ER -