1.
Vehkavaara T. Natural self-interest, interactive representation, and the emergence of objects and Umwelt: An outline of basic semiotic concepts for biosemiotics. SSS [Internet]. 2003 Dec. 31 [cited 2024 Apr. 27];31(2):547-8. Available from: https://ojs.utlib.ee/index.php/sss/article/view/SSS.2003.31.2.14