TY - JOUR AU - Ukpera, Awar Simon TI - Further results for some third order differential systems with nonlinear dissipation JO - Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica PY - 2004 SP - 155 EP - 169 VL - 43 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AUPO_2004__43_1_a16/ LA - en ID - AUPO_2004__43_1_a16 ER -