Numerical and Analytical Method based Mathematical Approach to Estimate Water Pollution over 3-D Region. Indian Journal of Advanced Mathematics (IJAM), [S. l.], v. 5, n. 2, p. 50–62, 2025. DOI: 10.54105/ijam.B1222.05021025. Disponível em: https://www.journals.latticescipub.com/index.php/ijam/article/view/1092.. Acesso em: 3 nov. 2025.