TY - JOUR AU - Elabbasy, E. M. AU - Elhaddad, W. W. TI - Oscillation Criteria for Nonlinear Differential Equations of Second Order with Damping Term JO - Serdica Mathematical Journal PY - 2008 SP - 395 EP - 414 VL - 34 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SMJ2_2008_34_2_a2/ LA - en ID - SMJ2_2008_34_2_a2 ER -