An analytical approximate method for solving unsteady state two-dimensional convection-diffusion equations. JOURNAL OF ADVANCES IN MATHEMATICS, [S. l.], v. 21, p. 73–88, 2022. DOI: 10.24297/jam.v21i.9242. Disponível em: https://www.rajpub.com/index.php/jam/article/view/9242. Acesso em: 19 jun. 2026.