TY - JOUR AU - A. Yu. Kolesov TI - Duck trajectories of relaxation systems connected with violation of the normal switching conditions JO - Sbornik. Mathematics PY - 1991 SP - 291 EP - 301 VL - 68 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1991_68_1_a14/ LA - en ID - SM_1991_68_1_a14 ER -