1. Brentari, C. (2015). Jakob von Uexküll: the Discovery of the Umwelt between Biosemiotics and Theoretical Biology. Springer.
2. Buchanan, B. (2008). Onto-ethologies: the animal environments of Uexküll, Heidegger, Merleau-Ponty, and Deleuze. SUNY Press.
3. Calarco, M. (2008). Zoographies. The question of the animal from Heidegger to Derrida. Columbia University Press.
4. Hoffmeyer, J. (2004). Uexküllian Planmässigkeit. Sign Systems Studies, 31(1/2), 73–97.
5. Kull, K. (2020). Uexküll studies after 2001. Sign Systems Studies, 48(2/4), 483–509.