@techreport{Crawford2013,
author = {Claire Crawford and Ellen Greaves},
title = {A comparison of commonly used socio-economic indicators: their relationship to educational disadvantage and relevance to Teach First},
year = {2013},
month = {Mar},
doi = {10.1920/re.ifs.2013.0079},
url = {http://www.ifs.org.uk/comms/r79.pdf},
}