, 1994, Peirce's puzzle and Putnam's progress: why should i be reasonable?, in G. Debrock & M. Hulswit (eds.), Living doubt, Dordrecht, Springer, pp. 225-235.
, 1988a, The soft impeachment: responding to Margolis, in H. Otto & J. Tuedio (eds.), Perspectives on mind, Dordrecht, Springer, pp. 355-364.