LOTMAN, M. Umwelt and semiosphere . Sign Systems Studies, [S. l.], v. 30, n. 1, p. 33–40, 2002. DOI: 10.12697/SSS.2002.30.1.03. Disponível em: https://ojs.utlib.ee/index.php/sss/article/view/SSS.2002.30.1.03. Acesso em: 24 apr. 2024.