ULLAH, M. W. .; UDDIN, M. A.; RAHMAN, M. S. An analytical technique for handling forced Van der Pol vibration equation. Journal of Bangladesh Academy of Sciences, [S. l.], v. 45, n. 2, p. 231–240, 2022. DOI: 10.3329/jbas.v45i2.56654. Disponível em: https://banglajol.info/index.php/JBAS/article/view/56654. Acesso em: 24 nov. 2024.