EL FARISSI, A.; BELA¨IDI, B. Oscillation and fixed points of derivatives of solutions of some linear differential equations. MATEMATIKA: Malaysian Journal of Industrial and Applied Mathematics, [S. l.], v. 30, p. 159–168, 2014. DOI: 10.11113/matematika.v30.n.707. Disponível em: https://matematika.utm.my/index.php/matematika/article/view/707. Acesso em: 28 sep. 2021.