TY - JOUR AU - Guo, Songbai AU - Ma, Wanbiao AU - Pradeep, B.G.Sampath Aruna TI - Necessary and sufficient conditions for oscillation of neutral delay differential equations JO - Electronic Journal of Differential Equations PY - 2014 VL - 2014 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/EJDE_2014__2014__a192/ LA - en ID - EJDE_2014__2014__a192 ER -