GAVIOLI, Nicola. A Poetic System In Expansion Against the Abyss: Fernando Pessoa’s Heteronyms and Kierkegaard’s Concept of Anxiety. Revista Letras, [S. l.], v. 82, 2010. DOI: 10.5380/rel.v82i0.25089. Disponível em: https://revistas.ufpr.br/letras/article/view/25089. Acesso em: 4 jan. 2026.