@TechReport{economics.dp.2012-38,
 author = {Menguy, Séverine},
 title = {Structural Heterogeneity and Partial Budgetary Cooperation in a Monetary Union},
 type = {Economics Discussion Paper},
 institution = {Kiel Institute for the World Economy},
 year = {2012},
 number = {2012-38},
 url = {http://www.economics-ejournal.org/economics/discussionpapers/2012-38}
}