1. Albert I (2007) Intergenerationale Transmission von Werten in Deutschland und Frankreich. Lengerich (Pabst).
2. Antonucci TC (1990) Social supports and social relationships. In: Binstock RH, George K
3. (Hg) (1990) Handbook of aging and the social sciences. San Diego, CA (Academic) 205-226.
4. Baltes MM, Silverberg SB (1994) The dynamics between dependency and autonomy: Illustrations across the life span. In: Featherman DL, Lerner RM.
5. (Hg) (1994) Life-span development and behavior. Hillsdale, NJ (Erlbaum) 41-90.