Analytical solution of two-dimensional fractional advection-diffusion equation with instantaneous source and time-varying coefficients. Gulf Journal of Mathematics, [S. l.], v. 21, n. 1, p. 470–485, 2025. DOI: 10.56947/gjom.v21i1.3403. Disponível em: https://www.gjom.org/index.php/gjom/article/view/3403. Acesso em: 20 aug. 2026.