KULL, K. Semiotic ecology: different nature in the semiosphere. Sign Systems Studies, [S. l.], v. 26, p. 344–371, 1998. DOI: 10.12697/SSS.1998.26.15. Disponível em: https://ojs.utlib.ee/index.php/sss/article/view/SSS.1998.26.15. Acesso em: 19 apr. 2024.