, 1982, 'Meinong's theory of defective objects', Grazer Philosophische Studien 15, 1-19.
, 1985a, 'Meinong's doctrine of the modal moment', Grazer Philosophische Studien 25, 423-438.
, 1985b, 'T. Regan, The case for animal rights: The meaning of animal rights', Human Studies 8 (4), 389-392.
, 1986, 'The uniqueness problem in Kant's transcendental doctrine of method', Man and World 19 (4), 425-438.
, 1989, 'Searle's intentionality thesis', Synthese 80 (2), 267-275.
, 1990, 'A Fregean solution to the paradox of analysis', Grazer Philosophische Studien 37, 59-73.
, 1991, 'Intensional logic and the metaphysics of intentionality, by Edward N. Zalta', Philosophy and Phenomenological Research 51 (2), 439-444.
, 1994a, 'A Meinongian theory of definite description', Axiomathes 5 (2-3), 345-359.
, 1994b, 'Obligations under causal constraints', Synthese 99 (2), 307-310.
, 1995, 'Meinong's concept of implexive being and nonbeing', Grazer Philosophische Studien 50, 233-271.
, 1996a, Alexius Meinong (1853–1920), in L. Albertazzi & R. Poli (eds.), The school of Franz Brentano, Dordrecht, Nijhoff, pp. 131-159.
, 1996b, 'On defoliating Meinong's jungle', Axiomathes 7 (1-2), 17-42.
, 1996c, 'The validity paradox in modal s 5', Synthese 109 (1), 47-62.
, 1997a, Haller on Wittgenstein and Kant, in K. Lehrer & J. C. Marek (eds.), Austrian philosophy past and present, Dordrecht, Kluwer, pp. 29-44.
, 1997b, 'Reflections on Mally's heresy', Axiomathes 8 (1-3), 163-180.
, 2000a, 'Confessions of a Meinongian logician', Grazer Philosophische Studien 58-59, 151-180.
, 2000b, 'Identity, intensionality, and Moore's paradox', Synthese 123 (2), 279-292.
, 2000c, 'Schopenhauer on the ethics of suicide', Continental Philosophy Review 33 (1), 43-58.
with Albertazzi, L. , Poli, R. (eds) , 2001, The school of Alexius Meinong, Ashgate, Aldershot.
, 2003a, Introduction, in D. Jacquette (ed.), Philosophy, psychology, and psychologism, Dordrecht, Springer, pp. 1-19.
, 2003b, 'Meinong on the phenomenology of assumption', Studia Phaenomenologica 3 (1-2), 155-177.
, 2003c, 'Plato on the parts of the soul', Epoché 8 (1), 43-68.
, 2003d, Psychologism revisited in logic, metaphysics, and epistemology, in D. Jacquette (ed.), Philosophy, psychology, and psychologism, Dordrecht, Springer, pp. 245-262.
(ed) , 2003, Philosophy, psychology, and psychologism: critical and historical readings on the psychological turn in philosophy, Springer, Dordrecht.
(ed) , 2004, The Cambridge companion to Brentano, Cambridge University Press, Cambridge.
, 2005, 'Nonstandard semantics for modal logic and the concept of a logically possible world', Philosophia Scientiae 9 (2), 239-258.
, 2013a, Belief state intensity, in N. Nottelmann (ed.), New essays on belief, Basingstoke, Palgrave Macmillan, pp. 209-229.
, 2013b, 'Qualities, relations, and property exemplification', Axiomathes 23 (2), 381-399.
, 2014, Austin on conceptual polarity and sensation deception metaphors, in B. Garvey (ed.), J.l. Austin on language, Basingstoke, Palgrave Macmillan, pp. 177-196.
, 2015a, Alexius Meinong: The shepherd of non-being, Springer, Dordrecht.
, 2015b, Alexius Meinong, the shepherd of non-being, Springer, Dordrecht.
, 2015c, Universal logic or logics in resemblance families, in A. Koslow & A. Buchsbaum (eds.), The road to universal logic I, Basel, Birkhäuser, pp. 309-325.
, 2016, Review: Van Atten Mark, Essays on Gödel's reception of Leibniz, Husserl and Brouwer, Phenomenological Reviews 2, pp. 22.
, 2017a, Frege: A philosophical biography, Cambridge University Press, Cambridge.
, 2017b, Tractatus objects and the logic of color incompatibility, in M. Silva (ed.), Colours in the development of Wittgenstein's philosophy, Dordrecht, Springer, pp. 57-94.