TY - JOUR AU - L. I. Kononenko TI - Qualitative analysis of singularly perturbed systems with one or two slow and fast variables JO - Sibirskij žurnal industrialʹnoj matematiki PY - 2002 SP - 55 EP - 62 VL - 5 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SJIM_2002_5_4_a4/ LA - ru ID - SJIM_2002_5_4_a4 ER -