- Boissy, A.; Bak Jensen, M.; Manteuffel, G.
- Assessment of Positive Emotions in Animals to Improve their Welfare.
- Physiology and Behavior, 2007, Vol. 92, 375 - 397
- 0031 9384
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no new data on present happiness.