Hans Sluga
Truth before Tarski
1999
in: Alfred Tarski and the Vienna circle, Dordrecht : Springer
Friedrich Stadler, Studien zum Wiener Kreis
1998
Vienna Circle Institute Yearbook
Thinking as writing
1989
Grazer Philosophische Studien 33
Semantic content and cognitive sense
1986
in: Frege synthesized, Dordrecht : Springer