Quantum differentiation and chain maps of bimodule complexes, with Sarah Witherspoon.  Submitted.

Jacobians of reflection groups, with Julia Hartmann.  Transactions of the American Mathematical Society, 360 (2008), no.1, 123--133.

Hochschild cohomology and graded Hecke algebras, with Sarah Witherspoon. Transactions of the American Mathematical Society 360 (2008), no. 8, 3975--4005.

Reflection groups and differential forms, with Julia Hartmann.  Mathematical Research Letters 14 (2007), no.6, 955--971.

Generalized exponents and forms. dvi, pdf   Journal of Algebraic Combinatorics, 22 (2005), no. 1, 115--132.

 Classification of graded Hecke algebras for complex reflection groups, with Arun Ram.  Commentarii Mathematici Helvetici, 78 (2003), no. 2, 308-334. dvi, ps, pdf 

 The Sign representation for Shephard groups, with Peter Orlik and Victor Reiner.  Mathematische Annalen, 322 (2002), 477-492. ps, dvi, pdf 

Logarithmic forms and anti-invariant forms of reflection groups, with Hiroaki Terao.    In  Advanced Studies in Pure Math., 27,  Arrangements, Tokyo, 2000, Kinokuniya and North-Holland, Tokyo-Amsterdam. pdf, ps.