TY - JOUR AU - Fečkan, Michal TI - Periodic solutions in systems at resonances with small relay hysteresis JO - Mathematica slovaca PY - 1999 SP - 41 EP - 52 VL - 49 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MASLO_1999__49_1_a5/ LA - en ID - MASLO_1999__49_1_a5 ER -