1. Adema, W. (2006). Social assistance policy development and the provision of a decent level of incomes in selected OECD countries. OECD social employment and migration working papers, 38. Paris: OECD.
2. Albert, C., & Davia, M. (2011). Pobreza monetaria, exclusión educativa y privación material de los jóvenes. Revista de Economía Aplicada, 56(XIX), 59–88.
3. Alcón, E. M., Quiñones, P. G., & Bermejo, L. R. (2002). Household services in Spain: Some key explanatory factors. The Service Industries Journal, 22(1), 26–31.
4. Ando, A., & Modigliani, F. (1957). Test of the life-cycle hypothesis of savings: comments and suggestions. Bulletin of the Oxford University Institute of Statistics, 19, 106.
5. APFC. (2009). An Alaskan´s guide to the Permanent Fund. http://www.apfc.org/home/Media/publications/2009AlaskansGuide.pdf . Visited on June 12, 2014.