@article{ref1,
title="Geriatric exercise (activity); how to exercise and how much",
journal="Journal - Michigan State Medical Society",
year="1956",
author="Ross, C. H.",
volume="55",
number="10",
pages="1222-1227",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0098-7522",
doi="",
url="http://dx.doi.org/"
}