Saad, Mastora, 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): 65-73. https://doi.org/10.51984/jopas.v18i1.204.