, 2000, 'The refutation of substrata', Philosophy and Phenomenological Research 61 (2), 431-439.
, 1997, 'On the compresence of tropes', Philosophy and Phenomenological Research 57, 599-606.
, 1995a, 'Artifacts and constituents', Philosophy and Phenomenological Research 55 (2), 311-322.
, 1995b, Experience, order and cause, in I. Kuuradi & R. S. Cohen (eds.), The concept of knowledge, Dordrecht, Springer, pp. 31-47.
, 1992a, 'Substance without substratum', Philosophy and Phenomenological Research 52 (3), 705-711.