Clark, John R., and Anna Lydia Motto. “The Paradox of Genius and Madness: Séneca and His Influence”. Cuadernos de Filología Clásica. Estudios Latinos, vol. 2, Jan. 1992, pp. 189-00, https://revistas.ucm.es/index.php/CFCL/article/view/CFCL9292120189A.