, 2014, A peg for some thoughts, in D. Dolby (ed.), Ryle on mind and language, Basingstoke, Palgrave Macmillan, pp. 126-145.
, 2013, Ryle's conceptual cartography, in E. Reck (ed.), The historical turn in analytic philosophy, Dordrecht, Springer, pp. 94-110.
, 2009, 'Real rules', Synthese 171 (3), 499-507.
, 2004a, 'On the conceptual, psychological, and moral status of zombies, swamp-beings, and other "behaviourally indistinguishable" creatures', Philosophy and Phenomenological Research 69 (1), 173-186.