1. Amann A, Reiterer B, Risser R (2006) Life quality of senior citizens in relation to mobility conditions. Final Report. University of Vienna, Institute of Sociology
2. Aristotle (n.d., trans. 1984). Nicomachean ethics. In: Barnes J (ed) The complete works of Aristotle. The revised Oxford translation, vol 2. Princeton University Press, Princeton, NJ
3. Baddeley AD (1990) Human memory: theory and practice. Allyn & Bacon, Needham Heights, MA
4. Bertelsen OW, Petersen MG, Pold S (eds) (2004) Aesthetic approaches to human-computer interaction. In: Proceedings of the NordiCHI 2004 workshop, tampere, Finland, 24 October. University of Aarhus, Aarhus
5. Buttimer A (1980) Home, reach and the sense of place. In: Buttimer A, Seamon D (eds) The human experience of space and place. Croom Helm Ltd., London, pp 166–187