@article{Wong1999,
author = {Wong, R. and Kitayama, K. and Soldo, B. J.},
title= {Ethnic Differences in Time Transfers from Adult Children to Elderly Parents: Unobserved Heterogeneity across Families},
year = {1999},
doi = {10.1177/0164027599212002},
journal = {Research on Aging, Special Issue on Multilevel Analysis in Aging Research},
volume = {21},
number = {2},
pages = {144--175},
}