Affiliation: | 1. Northern Research Institute, PO Box 6434 Troms? Science Park, N‐9294 Troms?, Norway;2. Department of Economics and Management, University of Troms?, N‐9037 Troms?, Norway (e‐mail: mikko.moilanen@norut.no);3. The author would like to thank Sanna‐Mari Hynninen and three anonymous referees for valuable comments. The paper is financed by grant 168539 from the Norwegian Research Council. The financial support is gratefully acknowledged. |