References
Paul Ziff
On being an abstract artist
1987
in: Philosophy and the visual arts, Dordrecht : Springer
Anything viewed
1979
in: Essays in honour of Jaakko Hintikka, Dordrecht : Springer
1987
in: Philosophy and the visual arts, Dordrecht : Springer
1979
in: Essays in honour of Jaakko Hintikka, Dordrecht : Springer