@article{ref1,
title="Critical appraisal of social indicators",
journal="Evaluation and program planning",
year="1979",
author="Sieber, Joan E.",
volume="2",
number="1",
pages="13-16",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0149-7189",
doi="10.1016/0149-7189(79)90041-7",
url="http://dx.doi.org/10.1016/0149-7189(79)90041-7"
}