1. The Making of an Immigration Model: Inflows, Impacts and Policies in Southern Europe;Arango,2009
2. Youth Population Trends and Sustainable Development 2015http://www.un.org/esa/socdev/documents/youth/fact-sheets/YouthPOP.pdf
3. The Remarkable Case of Spanish Immigrationhttp://bruegel.org/2015/12/the-remarkable-case-of-spanish-immigration/
4. Location determinants of migrant inflows: The Spanish case;Alamá,2014
5. Migración de Retorno a España: Salidas de Inmigrantes y Programas de Retorno en un Contexto de Crisishttps://www.raco.cat/index.php/AnuarioCIDOBInmigracion/article/viewFile/288374/376476