The Ideal as Real and as Purely Intentional—Ingarden based reflections (2013): Ingarden 2 NH
The Basic Distinctions in Der Streit (2013): Ingarden 1 NH
Fictions and the Spatiotemporal World — in the light of Ingarden (2010): language7
Proof of the Existence of Universals — and Roman Ingarden’s ontology (2009): ontology10
(in Swedish) Roman Ingarden on Theatre (2008): language6