TY - JOUR AU - Grace, Said R. AU - Lalli, Bikkar S. TI - Oscillation theorems for nonlinear second order differential equations with a damping term JO - Commentationes Mathematicae Universitatis Carolinae PY - 1989 SP - 691 EP - 697 VL - 30 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_1989__30_4_a8/ LA - en ID - CMUC_1989__30_4_a8 ER -