@article{ref1,
title="Social class and the senior citizen center",
journal="Gerontologist",
year="1971",
author="Tissue, T.",
volume="11",
number="3",
pages="196-200",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0016-9013",
doi="",
url="http://dx.doi.org/"
}