Eugen Baer
Ecce homo: how semiotics becomes what it is
2001
The American Journal of Semiotics 17/4
Thomas a. Sebeok's doctrine of signs
1987
in: Classics of semiotics, Dordrecht : Springer
Das Symptom bei Bühler und Freud
1984
in: Bühler-Studien 2, Frankfurt am Main : Suhrkamp
The medical symptom: phylogeny and ontogeny
1982
The American Journal of Semiotics 1/3