1. University of Warsaw Warsaw Poland
2. Institut National d'Études Démographiques Aubervilliers France
3. Centre d'Estudis Demogràfics, Centres de Recerca de Catalunya Bellaterra Spain
4. Vienna Institute of Demography (Austrian Academy of Sciences), Wittgenstein Centre for Demography and Global Human Capital (International Institute for Applied Systems Analysis, Austrian Academy of Sciences, University of Vienna) Vienna Austria
5. Department of Public Finance and Infrastructure Policy Institute of Spatial Planning, Vienna University of Technology Vienna Austria
6. Prague University of Economics and Business Prague Czech Republic