- Rudinger, G.; Thomae, H.
- The Bonn Longitudinal Study of Aging: Coping Life Adjustment, and Life Satisfaction.
- Baltes, P.B.;Baltes, M.M.;Eds.: "Succesful Aging. Perspectives from Behavioral Sciences", Cambridge University Press, 1990, UK, 265 - 295
Eligible for inclusion in findings archive
- No, no new data on present happiness.