M. J. Saad, N. Kumaresan and Kuru Ratnavelu 2019. Some Oscillation Theorems for Second Order Nonlinear and Nonhomogeneous Differential Equations with alternating coefficients. Journal of Pure & Applied Sciences . 18, 1 (Jul. 2019). DOI:https://doi.org/10.51984/jopas.v18i1.204.