Marsiske, M., Delius, J., Maas, I., Lindenberger, U., Scherer, H., & Tesch-Römer, C. (2001). Sensory systems in old age. In P. B. Baltes, & K. U. Mayer (Eds.), The Berlin Aging Study: Aging from 70 to 100 (pp. 360-383). Cambridge: Cambridge University Press.