@article{ref1,
title="The myth of female fraility, the reality of females and physical activity",
journal="Recent advances in nursing",
year="1989",
author="Daniels, D. B. and Winter, W. G.",
volume="25",
number="",
pages="1-19",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0144-6592",
doi="",
url="http://dx.doi.org/"
}