Institution: | (1) Department of Economics, Stockholm School of Economics, Box 6501, 113 83 Stockholm, Sweden, Mark.Voorneveld@hhs.se, tel. +46-8-7369217, fax. +46-8-313207, SE;(2) Department of Economics, Uppsala University, P.O. Box 513, 75120 Uppsala, Sweden. Sofia.Grahn@nek.uu.se, SE |