, 2008, 'Room for a view: on the metaphysical subject of personal identity', Synthese 162 (3), 341-372.
, 2004, I am you: the metaphysical foundations for global ethics, Springer, Dordrecht.
with Symons, J. , 2004, The results are in: the scope and import of Hintikka's philosophy, in J. Symons & D. Kolak (eds.), Quantifiers, questions and quantum physics, Dordrecht, Springer, pp. 209-271.
with Symons, J. (eds) , 2004, Quantifiers, questions and quantum physics: essays on the philosophy of Jaakko Hintikka, Springer, Dordrecht.
with Eklund, M. , 2002a, 'Is Hintikka's logic first-order?', Synthese 131 (3), 371-388.