AHMED, Abdel Baset I. Approximate Solutions and Estimate of Galerkin Method for Variable Third-Order Operator-Differential Equation. Advances in Systems Science and Applications, [S. l.], v. 22, n. 4, p. 92–102, 2022. DOI: 10.25728/assa.2022.22.4.1296. Disponível em: https://ijassa.ipu.ru/index.php/ijassa/article/view/1296. Acesso em: 24 nov. 2024.