“The Status of Labor-Saving Mechanization in Fruits and Vegetables.” Presented at a conference on “Immigration Reform: Implications for Farmers, Farm Workers and Communities,” sponsored by the Farm and Giannini Foundations, the North Central Regional Center for Rural Development, the Julian Samora Research Institute, the Southern Rural Development Center, and the University of California EU Center for Excellence, Washington, DC, May 27-28, 2010.

(R.E. Just). “Setting Incentives for Scientists Who Engage in Research and Other Activities: An Application of Principal-Agent Theory.” Presented at the Microeconomics Seminar, Tinbergen Institute and Department of Economics, Erasmus University, Rotterdam, The Netherlands, June 2010.