@article{Nishi2008,
author = {Nishi, F. and Kan, M.},
title= {“Hishinzoku no Danjo no Dokyo” no Saikin no Jokyo (Recent Figures of Non-Relatives Men and Women Who Live Together)},
year = {2008},
journal = {Statistics January},
volume = {2008},
pages = {70--77},
}