SOLUTION OF ORDINARY DIFFERENTIAL EQUATION: PERTURBATION ITERATION METHOD APPROACH. The Transactions of the Nigerian Association of Mathematical Physics, [S. l.], v. 17, p. 41 –50, 2021. Disponível em: https://nampjournals.org.ng/index.php/tnamp/article/view/198.. Acesso em: 1 jul. 2024.