Kristian Behrens CORE UCL   34 voie du Roman Pays Louvain-la-Neuve, 1348 Belgium   behrens@core.ucl.ac.be   http://www.core.ucl.ac.be/~behrens       Primary Research Focus: Spatial economics, international trade, monopolistic competition.   JEL Areas: R0 : Urban, Rural, and Regional Economics: General F1 : Trade: General