- Becchetti, L.; Giachin Ricca, E.; Pelloni, A.
- The 60es Turnaround as a Test on the Causal Relationship between Sociability and Happiness.
- Econometica WP. No 7, 2009, Orebro University, Orebro, Sweden
Eligible for inclusion in findings archive
- No, no new data on present happiness.