THANDAPANI, E.; SEGHAR, D.; PINELAS, S. Oscillation theorems for second order difference equations woth negative neutral term. Tamkang Journal of Mathematics, [S. l.], v. 46, n. 4, p. 441–451, 2015. DOI: 10.5556/j.tkjm.46.2015.1827. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/1827. Acesso em: 3 may. 2024.