A. Murugesan, and K. Ammamuthu. “Conditions for Oscillation and Convergence of Solutions to Second Order Neutral Delay Difference Equations With Variable Coefficients”. Malaya Journal of Matematik 5, no. 02 (April 1, 2017): 367–377. Accessed November 24, 2024. https://www.malayajournal.org/index.php/mjm/article/view/601.