ARAÚJO, Arthur. Structure, sign and Uexküll’s theory of meaning: A philosophical approximation. Cognitio: Revista de Filosofia, [S. l.], v. 17, n. 1, p. 13–38, 2016. Disponível em: https://revistas.pucsp.br/index.php/cognitiofilosofia/article/view/30210. Acesso em: 27 dic. 2025.