- Inspection Générale de la Sécurité Sociale (I.G.S.S.)
External person
- Inspection Générale de la Sécurité Sociale (I.G.S.S.)
External person
- KU Leuven - Faculty of Social Sciences
External person
- STATEC - Institut national de la Statistique et des études économiques
External person
- Illinois State University
External person
- Bulgarian Academy of Sciences
External person
- Bulgarian Academy of Sciences
External person
- Yildiz Technical University
External person
- Yildiz Technical University
External person
- University College London
External person
- Hungarian Demographic Research Institute
External person