A qualitative exploration of a coupled system with mixed fractional derivatives and the Laplacian operator. Gulf Journal of Mathematics, [S. l.], v. 22, n. 2, 2026. DOI: 10.56947/gjom.v22i2.4241. Disponível em: https://gjom.org/index.php/gjom/article/view/4241. Acesso em: 4 oct. 2026.