WANG, P.; WU, Y. Further results on differential inequality of a class of second order neutral type. Tamkang Journal of Mathematics, [S. l.], v. 35, n. 1, p. 43–52, 2004. DOI: 10.5556/j.tkjm.35.2004.225. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/225. Acesso em: 4 may. 2024.