TY - JOUR AU - N. B. Zhuravlev TI - Hyperbolicity criterion for periodic solutions of functional-differential equations with several delays JO - Contemporary Mathematics. Fundamental Directions PY - 2007 SP - 37 EP - 61 VL - 21 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMFD_2007_21_a1/ LA - ru ID - CMFD_2007_21_a1 ER -