@techreport{Li2009,
author = {Li, B.},
title= {Why do migrant workers not participate in urban social security schemes? the case of the construction and service sectors in Tianjin},
year = {2009},
URL = {http://eprints.lse.ac.uk/21775/1/Why_do_migrant_workers_not_participate_in_urban_social_security_schemes(LSERO).pdf},
publisher = {LSE Research},
}