Augustin Riska
Knowledge by acquaintance reconsidered
1980
Grazer Philosophische Studien 11

Language and logic in the work of Roman Ingarden
1976
in: Ingardeniana, Dordrecht : Reidel

The "a priori" in Ingarden's theory of meaning
1974
in: The phenomenological realism of the possible worlds, Dordrecht : Springer
