@article{Chang2012,
author = {Chang, M.S. and Park, K.S.},
title= {Factors affecting life satisfaction for the aged: From the ecosystem perspective},
year = {2012},
doi = {10.15709/hswr.2012.32.2.232},
journal = {Health and Social Welfare Review },
volume = {32},
number = {2},
pages = {232−266 (in Korean)},
}