- Heyl, V.; Mollenkopf, H.; Wahl, H.W.
- Visual Capacity, Out-of-Home Activities and Emotional Well-Being in Old Age: Basic Relations and Contextual Variation.
- Social Indicators Research, 2005, Vol. 74, 159 - 189
- 0303 8300
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.