VON UEXKÜLL, T.; RÜTING, T. Eye witnessing Jakob von Uexküll’s Umwelttheory. Sign Systems Studies, [S. l.], v. 32, n. 1/2, p. 373–374, 2004. DOI: 10.12697/SSS.2004.32.1-2.17. Disponível em: https://ojs.utlib.ee/index.php/sss/article/view/SSS.2004.32.1-2.17. Acesso em: 1 may. 2024.