TY - JOUR AU - V. M. Volosov AU - B. I. Morgunov TI - On the estimation of oscillatory behaviour for certain non-Hamiltonian systems JO - Doklady Akademii Nauk PY - 1965 SP - 1048 EP - 1050 VL - 161 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1965_161_5_a13/ LA - ru ID - DAN_1965_161_5_a13 ER -