P. Gopalakrishnan, and A. Murugesan. “Sharp Sufficient Conditions for Oscillation of Second-Order General Noncanonical Difference Equations”. Malaya Journal of Matematik 9, no. 01 (January 1, 2021): 1141–1146. Accessed November 24, 2024. https://www.malayajournal.org/index.php/mjm/article/view/1238.