@article{Riva2007,
author = {Riva, M. and Gauvin, L. and Barnett, T.A},
title= {Toward the next generation of research into small area effects on health: a synthesis of multilevel investigations published since July 1998},
year = {2007},
doi = {10.1136/jech.2006.050740},
journal = {Journal of Epidemiology and Community Health},
volume = {61},
number = {10},
pages = {853--861},
}