AL-SAIF, A. S. J. .; HASAN, Z. A. 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: 3 may. 2024.