Institution: | (1) Ragnar Frisch Centre for Economic Research, Gaustadaléen 21, N-0349 Olso, Norway (e-mail: rolf.golombek@frisch.uio.no), NO;(2) Norwegian School of Management and the Frisch Centre, Elias Smiths vei 15, Box 580, N-1301 Sandvika (e-mail: espen. moen@bi.no), NO |