TØNNESSEN, M. . Outline of an Uexküllian bio-ontology. Sign Systems Studies, [S. l.], v. 29, n. 2, p. 683–691, 2001. DOI: 10.12697/SSS.2001.29.2.15. Disponível em: https://ojs.utlib.ee/index.php/sss/article/view/SSS.2001.29.2.15. Acesso em: 18 apr. 2024.