E. THANDAPANI; V. BALASUBRAMANIAN. Some oscillation theorems for second order nonlinear neutral type difference equations. Malaya Journal of Matematik, India, v. 1, n. 03, p. 34–43, 2013. DOI: 10.26637/mjm103/006. Disponível em: https://www.malayajournal.org/index.php/mjm/article/view/360. Acesso em: 16 jul. 2024.