1. Baltes PB, Baltes MM (1990) Psychological perspectives on successful aging: the model of selective optimization with compensation. In: Baltes PB, Baltes MM (ed) Successful aging: perspectives from the behavioral sciences. University Press, Cambridge, pp. 1–34
2. Bosch E-M (1990) Altersbilder in den bundesdeutschen Medien [Images of age in the German media]. In: Straka G, Fabian T, Will J (ed) Aktive Mediennutzung im Alter [Active media use in old age]. Asanger, Heidelberg, pp. 77–92
3. Dahinden U (2006) Framing—Eine integrative Theorie der Massenkommunikation [Framing —an integrative theory of mass communication]. UVK, Konstanz
4. Erlemeier N (1998) Altersbilder in Medien [Images of age in the media]. In: Grohall K-H, Michatsch H (ed) Beiträge zum Verständnis kommunikativer Wirklichkeit [Contributions to the understanding of communicative reality]. Waxmann, Münster, pp. 45–60
5. European Commission (2020) Demography report 2020 https://ec.europa.eu/info/sites/default/files/demography_report_2020_n.pdf. Accessed 5 May 2022