Morten Tønnessen
2003
Sign systems studies 31/1
2009
Sign systems studies 37/3-4
2009
Biosemiotics 2/1
Semiotics of being and Uexküllian phenomenology
2011
in: Phenomenology/ontopoiesis retrieving geo-cosmic horizons of antiquity, Dordrecht : Springer
The ontogeny of the embryonic, foetal and infant human umwelt
2014
Sign systems studies 42/2-3
2015
in: Biosemiotic perspectives on language and linguistics, Dordrecht : Springer
What can be known about future Umwelten?
2019
The American Journal of Semiotics 35/3-4