@article{ref1,
title="Recreation paricipation patterns and successful aging",
journal="Journal of gerontology",
year="1974",
author="DeCarlo, T. J.",
volume="29",
number="4",
pages="416-422",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-1422",
doi="",
url="http://dx.doi.org/"
}