@inbook{Ellwood2004,
author = {Ellwood, D.T. and Jencks, C.},
title= {The uneven spread of single-parent families: What do we know? Where do we look for answers?},
year = {2004},
editor = {Neckerman, K.M.},
booktitle = {Social inequality},
address = {New York},
publisher = {Russell Sage Foundation},
pages = {3--78},
}