@article{ref1,
title="Problems of instability in old age",
journal="Journal of the royal society of health",
year="1984",
author="Sim, J.",
volume="104",
number="4",
pages="144-146",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0264-0325",
doi="",
url="http://dx.doi.org/"
}