TY  - JOUR
A1  - Fowler, J.H.
A1  - Christakis, N.A.
T1  - Dynamic spread of happiness in a large social network: Longitudinal analysis over 20 years in the Framlington Heart Study
Y1  - 2008
DO  - 10.1136/bmj.a2338
JF  - British Medical Journal
VL  - 337

ER  -