@article{Hill2010,
author = {Hill, A.L. and Rand, D.G. and Nowak, M.A. and Christakis, N.A.},
title= {Emotions as Infectious Diseases in a Large Social Network: the SISa model},
year = {2010},
doi = {10.1098/rspb.2010.1217},
journal = {Proceedings of the Royal Society B: Biological Sciences},
volume = {277},
number = {1701},
pages = {3827--3835},
}