@article{Zeng2006,
author = {Zeng, Y. and Land, K. and Wang, Z. and Gu, D.},
title= {U.S. family household momentum and dynamics: an extension and application of the ProFamy method},
year = {2006},
doi = {10.1007/s11113-006-7034-9},
journal = {Population Research and Policy Review},
volume = {25},
pages = {1--41},
}