Institution: | (1) Kellogg School of Management (CMS-EMS), Northwestern University, 5100 Leverone Hall, 2001 Sheridan Road, Evanston, IL 60208-2014, USA;(2) Research Group in Economic Analysis, University of Vigo, Vigo, Spain;(3) Department of Statistics and Operations Research, University of Vigo, Vigo, Spain |