ATSLEGA, Svetlana. On solutions of neumann boundary value problem for the liénard type equation. Mathematical Modelling and Analysis, [S. l.], v. 13, n. 2, p. 161–169, 2008. DOI: 10.3846/1392-6292.2008.13.161-169. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/6999. Acesso em: 17 may. 2025.