1. Amoretti G. (2017). Elderly People in Africa: between stereotypes and reality, in Active Ageing (G. Amoretti, D. Spulber, N. Varani Eds,), Carocci Editore, Roma, pp.31-37.
2. Amoretti G., Spulber D., Varani N. (Eds.) (2017). Active ageing. From wisdom to Lifelong Learning, Carocci Editore, Roma.
3. Bauman A. E. (2004). Updating the evidence that physical activity is good for health: an epidemiological review 2000-2003, Journal of Science and Sport Medicine, 7, 1, suppl., pp. 6-19.
4. Cumming E., Henry W. E. (1961). Growing Old, Basic Books, New York (NY).
5. Friedland R.P., Fritsch T., Smith K. et al. (2000). Participation in nonoccupational activities in midlife is protective against the development of Alzheimer’s disease: Results from a case-control study, Neurology, 54, 3, p. A360.