with Lill Anjum, R. , 2018, Powers and potentiality, in K. Engelhard & M. Quante (eds.), Handbook of potentiality, Dordrecht, Springer, pp. 261-278.
with Lill Anjum, R. , 2011, 'Dispositional modality', Deutsches Jahrbuch Philosophie 2, 468-482.
, 2010, 'No power in Unger's world', Philosophy and Phenomenological Research 80 (2), 476-483.
, 2006, 'The ungrounded argument', Synthese 149 (3), 471-489.
, 2005a, 'Laws and lawlessness', Synthese 144 (3), 397-413.