"The Phase Impenetrability Condition, the Vacuous Movement Hypothesis, and That-t Effects," in Lingua Vol.114 Issus 2, Elsevier, 2004. "A Nonuniform Analysis of overt Wh-Movement," in Linguistic Inquiry, Vol.37 Issue 1, MIT Press, 2006 "On the Relaxation of Intervention Effects," in L. Cheng and N. Corver(eds.), Wh-movement Moving on, MIT Press, 2006.
