@inbook{Iwasawa2005,
author = {Iwasawa, M.},
title= {Cohabitation in Japan},
year = {2005},
editor = {Council, Mainichi Newspaper Population Research},
booktitle = {Family Attitudes in an Era of Lowest-Low Fertility (in Japanese)},
address = {Tokyo},
publisher = {Mainichi Shimbunsha},
pages = {71--106},
}