DAHLQUIST, G. Convergence and stability for a hyperbolic difference equation with analytic initial-values. MATHEMATICA SCANDINAVICA, [S. l.], v. 2, p. 91–102, 1954. DOI: 10.7146/math.scand.a-10399. Disponível em: https://www.mscand.dk/article/view/10399. Acesso em: 29 apr. 2024.