THANDAPANI, E.; RAMA, R. Oscillatory behavior of solutions of certain third order mixed neutral differential equations. Tamkang Journal of Mathematics, [S. l.], v. 44, n. 1, p. 99–112, 2013. DOI: 10.5556/j.tkjm.44.2013.1150. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/1150. Acesso em: 28 apr. 2024.