- Nes, R.B.; Reichborn-Kjennerud, T.; Roysamb, E.
- Subjective Wellbeing and Sleep Problems: a bivariate twin Study.
- Twin Research and Human genetics, 2005, Vol. 8, 440 - 449
- 1832 4274
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no new data on present happiness.