Editor, Econometrics Journal, 2002-2007
Associate Editor, Journal of Economic and Business Statistics, 1997-2000
Professor and Associate Professor, Unversity of California, Los Angeles, 1999-2002, 2002-2006
Assistant Professor, University of Chicago, 1995-1998
  • Estimation of Dynamic Panel Data Sample Selection Models, Review of Economic Studies, 2001
  • Panel Data Discrete Choice Models with Lagged Dependent Variables, με τον Bo E. Honore, Econometrica, 2000
  • Estimation of a Panel Data Sample Selection Model, Econometrica, 1997