R. Arul, and T.J. Raghupathi. “Oscillation Theorems for Second-Order Half-Linear Neutral Difference Equations”. Malaya Journal of Matematik 2, no. 04 (October 1, 2014): 460–471. Accessed July 16, 2024. https://www.malayajournal.org/index.php/mjm/article/view/438.