@article{ref1,
title="Generalizability Issues in Observational Studies of Couples: Sample Characteristics and Task Design",
journal="Journal of marriage and family",
year="2007",
author="Kim, Hyoun K. and Capaldi, Deborah M.",
volume="69",
number="1",
pages="86-91",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0022-2445",
doi="10.1111/j.1741-3737.2006.00346.x",
url="http://dx.doi.org/10.1111/j.1741-3737.2006.00346.x"
}