1. Antonucci, T. C. (1985). Personal characteristics, social support, and social behavior. In R. H. Binstock and E. Shanas (Eds.), Handbook of aging and the social sciences ( 2nd ed., pp. 94–128 ). New York: Van Nostrand Reinhold.
2. Aspinwall, L., and Taylor, S. (1997). A stitch in time: Self-regulation and proactive coping. Psychological Bulletin, 121, 417–436.
3. Aymanns, P. (1992). Krebserkrankung und Familie. Zur Rolle familiarer Unterstützu im Prozeß der Krebserkrankung. Bern: Huber.
4. Baltes, M. M. and Barton, E. M. (1979). Behavioral analysis of aging: A review of the operant model and research. Journal of Behavior Development, 2, 297–320.
5. Baltes, M. M. and Silverberg, S. (1994). The dialectic between autonomy and dependency throughout the life course. In D. L. Featherman, R. M. Lerner, and M. Perlmutter (Eds.), Life-span development and behavior (Vol. 12, pp. 41–90 ). Hillsdale, NJ: Erlbaum.