1. Vilnius University , Faculty of Economics and Business Administration , Saulėtekio al. 9 , Vilnius , Lithuania
2. University of Liège , Faculty of Law, Tax Institute and HEC Liège , Rue Louvrex 14 , Liège , Belgium ; IZA , Schaumburg-Lippe-Straße 5–9 , Bonn , Germany and NETSPAR , Warandelaan 2, 5037 AB Tilburg , The Netherlands .