Baltes, Paul B. Center for Lifespan Psychology, Max Planck Institute for Human Development, Max Planck Society;
Baltes, P. B. (1999). Theoretical propositions of life-span developmental psychology: On the dynamics between growth and decline. In R. M. Lerner, & J. V. Lerner (Eds.), Adolescence: Development, diversity and context (pp. 37-52). New York: Garland.