, 2019, 'Discontinuities and singularities, data and phenomena: for referentialism', Synthese 196 (5), 1919-1937.
, 2016, Later Wittgenstein on the logicist definition of number, in S. Costreie (ed.), Early analytic philosophy, Dordrecht, Springer, pp. 233-255.
, 2008a, 'Inference to the best explanation and mathematical realism', Synthese 160 (1), 13-20.