1. Institute for Housing and Urban Development Studies (IHS), Erasmus University Rotterdam , Burgemeester Oudlaan 50, Rotterdam 3062 PA, The Netherlands . e-mail: calzadaolvera@ihs.nl
2. UNU-MERIT , Boschstraat 24, Maastricht, 6211 AX, The Netherlands
3. National Graduate Research Institute for Policy Studies (GRIPS) , 7 Chome-22-1 Roppongi, Minato City, Tokyo 106-0032, Japan . e-mail: mi-iizuka@grips.ac.jp