1. Growing Older in the 21st Century;Dean,2003
2. Envejecer en el siglo XXI. Perfiles y Tendencias 21,1983
3. Walker A, Hagan Hennessy C. Growing Older - Quality of Life in Old Age. Maidenhead: Open University Press/McGraw Hill; 2004.
4. Growing Older in Europe;Walker,2005
5. Understanding Quality of Life in Old Age;Walker,2005