P. Selvakumar and A. Murugesan (2021) “Necessary and sufficient conditions for oscillation of solutions to second-order non-linear difference equations with delay argument”, Malaya Journal of Matematik. India, 9(01), pp. 1170–1175. Available at: https://www.malayajournal.org/index.php/mjm/article/view/1243 (Accessed: 16 July 2024).