1. Alexander, J. M. (2008). Capabilities and social justice: The political philosophy of Amartya Sen and Martha Nussbaum. Burlington: Ashgate Publishing Limited.
2. Andrews, F. M., & Withey, S. B. (1976). Social indicators of well-being: Americans’ perceptions of life quality. New York: Plenum Press.
3. Athanassoulis, N. (2010). Virtue ethics. In Internet encyclopedia of philosophy.
http://www.iep.utm.edu/virtue(20.02.2014)
4. Baltes, M. M., & Baltes, P. B. (1993). Psychological perspectives on successful aging: The model of selective optimization with compensation. In P. B. Baltes & M. M. Baltes (Eds.), Successful aging: Perspectives from the behavioral sciences (pp. S. 1–S. 34). Cambridge University Press.
5. Boarini, R., & d’Ercole, M. M. (2006). Measures of material deprivation in OECD countries. In OECD social, employment and migration working papers 37, OECD publishing.