TY - JOUR AU - Yu. A. Dmitriev TI - Frequency conditions for dissipation and existence of periodic solutions in the case of pulse systems with one non-linear block JO - Doklady Akademii Nauk PY - 1965 SP - 28 EP - 31 VL - 164 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1965_164_1_a5/ LA - ru ID - DAN_1965_164_1_a5 ER -