@techreport{Levell2000,
author = {Peter Levell and Richard May and Cormac O'Dea and David Phillips},
title = {A survey of the UK benefit system},
year = {2000},
month = {Nov},
doi = {10.1920/bn.ifs.2000.0013},
url = {http://www.ifs.org.uk/bns/bn13.pdf},
}