SMIRNOV, Sergey. Properties of zeros of solutions to third order nonlinear differential equations. Mathematical Modelling and Analysis, [S. l.], v. 18, n. 4, p. 480–488, 2013. DOI: 10.3846/13926292.2013.841298. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/4130. Acesso em: 10 may. 2025.