BENEKAS, V. .; KASHKYNBAYEV, A. . A Survey on Sharp Oscillation Conditions for Delay Difference Equations. Journal of Advances in Applied & Computational Mathematics, [S. l.], v. 8, p. 117–128, 2022. DOI: 10.15377/2409-5761.2021.08.9. Disponível em: https://ijaet-journal.org/index.php/jaacm/article/view/1194. Acesso em: 13 jul. 2025.