BIZZARRI, Andrea. Wolfram Mathematica can provide an improper solution of an Ordinary Differential Equation: An intriguing Example. Rapporti Tecnici INGV, [S. l.], v. 111, 2009. Disponível em: https://collane-editoriali.ingv.it/index.php/rt/article/view/976. Acesso em: 20 oct. 2026.