1. University of Zaragoza, Faculty of Economics and Business; Department of Economic Analysis; C/Gran Via 2, 3rd floor 50005 Zaragoza Spain
2. Institute for Biocomputation and Physics of Complex Systems (BIFI); University of Zaragoza
3. Institute for Biocomputation and Physics of Complex Systems (BIFI) University of Zaragoza
4. Institute for the Study of Labor (IZA)