AL-MASHRAFI, Khaled. Diffusion of dust particles emitted from a fixed source. International Journal of Applied Mathematical Research, [S. l.], v. 4, n. 4, p. 454–465, 2015. DOI: 10.14419/ijamr.v4i4.5058. Disponível em: https://www.sciencepubco.com/index.php/ijamr/article/view/5058.. Acesso em: 5 may. 2024.