Book Chapter
Baltes, M. M.,
Maas, I.,
Wilms, H.-U.,
Borchelt, M., &
Little, T. D. (1999). Everyday competence in old and very old age: Theoretical considerations and empirical findings. In
P. B. Baltes &
K. U. Mayer (Eds.),
The Berlin Aging Study: Aging from 70 to 100 (pp. 384–402). Cambridge University Press.