@article{ref1,
title="Commentary on the pitfalls and pratfalls of evaluation research with intervention and prevention programs",
journal="New directions in evaluation",
year="2006",
author="Bierman, K. L.",
volume="2006",
number="110",
pages="87-96",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="1097-6736",
doi="10.1002/ev.189",
url="http://dx.doi.org/10.1002/ev.189"
}