@article{ref1,
title="Structural equation models for area health outcomes with model selection",
journal="Journal of applied statistics",
year="2011",
author="Congdon, Peter Douglas",
volume="38",
number="4",
pages="745-767",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0266-4763",
doi="10.1080/02664760903563692",
url="http://dx.doi.org/10.1080/02664760903563692"
}