@techreport{Miwa2008,
author = {Miwa, S.},
title= {Hatarakikatato Lifestyle No Henkanikansruzenkokuchousa 2007 Niokeru Hyouhontokuseito Keppyounituiteno Kisobunseki’ (Sample bias and the unit nonresponse cases for JLPS-2007)},
year = {2008},
publisher = {University of Tokyo, Institute of Social Sciences},
address = {Tokyo},
institution = {Discussion paper series of University of Tokyo, Institute of Social Sciences Panel Survey},
}