@techreport{Crawford2013,
author = {Claire Crawford and Wenchao (Michelle) Jin and Helen Simpson},
title = {Firms' productivity, investment and training, what happened during the recession and how was it affected by the national minimum wage?},
year = {2013},
month = {Mar},
doi = {10.1920/re.ifs.2013.0076},
url = {http://www.ifs.org.uk/comms/r76.pdf},
}