@article{Ryan2008,
author = {Ryan, R.M. and Kalil, A. and Ziol-Guest, K.M.},
title= {Longitudinal patterns of nonresident fathers’ involvement: The role of resources and relations},
year = {2008},
doi = {10.1111/j.1741-3737.2008.00539.x},
volume = {70},
number = {4},
pages = {962--977},
}