KULL, K. The concept of semiosphere – Wallis before Lotman and Hoffmeyer. Sign Systems Studies, [S. l.], v. 53, n. 1-2, p. 270–277, 2025. DOI: 10.12697/SSS.2025.53.1-2.12. Disponível em: https://ojs.utlib.ee/index.php/sss/article/view/25874. Acesso em: 5 dec. 2025.