González-Enríquez, C. and Martínez Romera, J.P. 2017. Spanish High Qualified Migration after the Crisis. A Comparison with Italian, Greek and Portuguese High Qualified Migrations. Migraciones. Publicación del Instituto Universitario de Estudios sobre Migraciones. 43 (Dec. 2017), 117–145. DOI:https://doi.org/10.14422/mig.i43.y2017.006.