, 2018, 'Brandom and the brutes', Synthese 195 (12), 5521-5547.
, 2012, Russell and Leibniz on the classification of propositions, in Y. Chin Drian & R. Krömer (eds.), New essays on Leibniz reception, Dordrecht, Springer, pp. 85-127.
, 1985, 'Russell's critique of Meinong's theory of objects', Grazer Philosophische Studien 25, 375-401.
, 1979a, 'The independence of sosein from sein', Grazer Philosophische Studien 9, 23-34.