Brentani, Carlo. “Konrad Lorenz’s Epistemological Criticism towards Jakob Von Uexküll”. Sign Systems Studies 37, no. 3/4 (December 1, 2009): 637–660. Accessed April 25, 2024. https://ojs.utlib.ee/index.php/sss/article/view/SSS.2009.37.3-4.13.