Baltes, P. B., Mayer, K. U., Helmchen, H., Steinhagen-Thiessen, E., & Neher, K. M. (2000). Arbeitsgruppe "Altern und gesellschaftliche Entwicklung (AGE)": Projektgruppe "Berliner Altersstudie (BASE)". In Berlin-Brandenburgische Akademie der Wissenschaften (Ed.), Jahrbuch (Vol. 1999, pp. 187–198). Akademie-Verlag.

Freund, A. M., & Baltes, P. B. (2000). The orchestration of selection, optimization, and compensation: An action-theoretical conceptualization of a theory of developmental regulation. In W. J. Perrig & A. Grob (Eds.), Control of human behavior, mental processes and consciousness (pp. 35–58). Erlbaum.

Lindenberger, U., & Baltes, P. B. (2000). Life span psychology theory. In A. E. Kazdin (Ed.), Encyclopedia of psychology (Vol. 5, pp. 52–57). Oxford University Press.

Pasupathi, M., & Baltes, P. B. (2000). Wisdom. In A. E. Kazdin, E. B. Blanchard, R. R. Bootzin, G. H. Bower, J. C. Conoley, & K. Deaux (Eds.), Encyclopedia of psychology (Vol. 8, pp. 249–253). APA Books.

Staudinger, U. M., & Baltes, P. B. (2000). Entwicklungspsychologie der Lebensspanne. In H. Helmchen, F. A. Henn, H. Lauter, & N. Sartorius (Eds.), Psychiatrie spezieller Lebenssituationen (4th ed., pp. 3–17). Springer.

Baltes, P. B. (1999). Psychologie als Sozialwissenschaft: Festrede. In F. E. W.: Festreden anläßlich der Emeritierung von Franz Emanuel Weinert (pp. 27–67). Max-Planck-Institut für psychologische Forschung.

Baltes, P. B. (1999). L'architettura incompiuta dell'ontogenesi umana: Implicazioni per il futuro della quarta età. In C. M. Lucchetti & A. Venturelli (Eds.), Ambiente e invecchiamento: Politiche e strategie di ricerca in Germania e in Italia (pp. 169–192). Guerini Studio.

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: Vol. 1. Theoretical foundations and biological bases of developmental in adolescence (pp. 37–52). Garland.

Baltes, P. B., & Mayer, K. U. (1999). Introduction. In P. B. Baltes & K. U. Mayer (Eds.), The Berlin Aging Study: Aging from 70 to 100 (pp. 1–11). Cambridge University Press.

Baltes, P. B., Mayer, K. U., Helmchen, H., & Steinhagen-Thiessen, E. (1999). The Berlin Aging Study (BASE): Sample, design, and overview of measures. In P. B. Baltes & K. U. Mayer (Eds.), The Berlin Aging Study: Aging from 70 to 100 (pp. 15–55). Cambridge University Press.

Baltes, P. B., Mayer, K. U., Helmchen, H., & Steinhagen-Thiessen, E. (1999). Die Berliner Altersstudie (BASE): Überblick und Einführung. In K. U. Mayer & P. B. Baltes (Eds.), Die Berliner Altersstudie (2nd., rev. ed., pp. 21–54). Akademie-Verlag.

Baltes, P. B., Mayer, K. U., Helmchen, H., & Steinhagen-Thiessen, E. (1999). Die Berliner Altersstudie (BASE): Überblick und Einführung. In K. U. Mayer & P. B. Baltes (Eds.), Die Berliner Altersstudie (2nd., rev. ed., pp. 21–54). Akademie-Verlag.

Baltes, P. B., & Smith, J. (1999). Multilevel and systemic analyses of old age: Theoretical and empirical evidence for a fourth age. In P. B. Baltes & K. U. Mayer (Eds.), Handbook of theories of aging (pp. 153–173). Springer.

Freund, A. M., Li, K. Z. H., & Baltes, P. B. (1999). Successful development and aging: The role of selection, optimization, and compensation. In J. Brandtstätter & R. M. Lerner (Eds.), Action and self-development: Theory and research through the life span (pp. 401–434). Sage.

Lindenberger, U., Gilberg, R., Little, T. D., Nuthmann, R., Pötter, U., & Baltes, P. B. (1999). Sample selectivity and generalizability of the results of the Berlin Aging Study. In P. B. Baltes & K. U. Mayer (Eds.), The Berlin Aging Study: Aging from 70 to 100 (pp. 56–82). Cambridge University Press.

Lindenberger, U., Gilberg, R., Pötter, U., Little, T. D., & Baltes, P. B. (1999). Stichprobenselektivität und Generalisierbarkeit der Ergebnisse in der Berliner Altersstudie. In K. U. Mayer & P. B. Baltes (Eds.), Die Berliner Altersstudie (2nd., rev. ed., pp. 85–108). Akademie-Verlag.

Mayer, K. U., & Baltes, P. B. (1999). Vorwort. In K. U. Mayer & P. B. Baltes (Eds.), Die Berliner Altersstudie (2nd., rev. ed., pp. 7–16). Akademie-Verlag.

Mayer, K. U., & Baltes, P. B. (1999). Vorwort. In K. U. Mayer & P. B. Baltes (Eds.), Die Berliner Altersstudie (2nd., rev. ed., pp. 7–16). Akademie-Verlag.

Mayer, K. U., Baltes, P. B., Baltes, M. M., Borchelt, M., Delius, J. A. M., Helmchen, H., Linden, M., Smith, J., Staudinger, U. M., Steinhagen-Thiessen, E., & Wagner, M. (1999). What do we know about old age and aging? Conclusions from the Berlin Aging Study. In P. B. Baltes & K. U. Mayer (Eds.), The Berlin Aging Study: Aging from 70 to 100 (pp. 475–519). Cambridge University Press.

Mayer, K. U., Baltes, P. B., Baltes, M. M., Borchelt, M., Delius, J., Helmchen, H., Linden, M., Smith, J., Staudinger, U. M., Steinhagen-Thiessen, E., & Wagner, M. (1999). Wissen über das Alter(n): Eine Zwischenbilanz der Berliner Altersstudie [Knowledge about age and aging: Conclusions from the Berlin Aging Study]. In K. U. Mayer & P. B. Baltes (Eds.), Die Berliner Altersstudie (2nd., rev. ed., pp. 599–634). Akademie-Verlag.