- Sandoe, P.; Kappel, K.
- Changing Preferences: Conceptual Problems in Comparing Health Related Quality of Life.
- Nordenfelt, L.;Ed.: "Concepts and Measurement of Quality-of-Life in Health Care", Kluwer, 1994, Dordrecht, Netherlands, 161 -180
Eligible for inclusion in findings archive
- No, no new data on present happiness.