[1] Lund Univ, Sch Econ & Management, Inst Econ Res, POB 7080, S-22007 Lund, Sweden
[2] Hinterhuber & Partners, Innsbruck, Austria
[3] Bocconi Univ, Milan, Italy
[4] Richard Ivey Sch Business, Gen Management, London, ON, Canada
[5] Ardex Amer Inc, Aliquippa, PA USA
[6] Case Western Reserve Univ, Weatherhead Sch Management, Cleveland, OH 44106 USA