TY - JOUR AU - L. G. Kurakin TI - Critical cases of stability. Converse implicit function theorem for dynamical systems with cosymmetry JO - Matematičeskie zametki PY - 1998 SP - 572 EP - 578 VL - 63 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1998_63_4_a9/ LA - ru ID - MZM_1998_63_4_a9 ER -