CHRISTOV, C. Fourier-Galerkin algorithm for 2D localized solutions. Ann. Sofia Univ. Fac. Math. and Inf., [S. l.], v. 89, p. 169–179, 1997. Disponível em: https://annual.uni-sofia.bg/index.php/fmi/article/view/365. Acesso em: 22 nov. 2024.