1. The control of developmental processes: Why wait?;Baer,1973
2. Comparison of interaction patterns of the most dependent vs. most independent nursing home residents;Baltes,1979
3. Environmental factors in dependence among nursing home residents: A social ecology analysis;Baltes,1982
4. Erfolgreiches Altern als Ausdruck von Verhaltenskompetent und Umweltqualitat (Successful aging as consequence of behavioral competence and environmental qualities;Baltes,1987
5. Micro-analytical research on environmental factors and processes in psychological aging;Baltes,1982