@article{ref1,
title="A further investigation of the optimum angle of projection for the racing start in swimming",
journal="Research quarterly",
year="1972",
author="Groves, R. and Roberts, J. A.",
volume="43",
number="2",
pages="167-174",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0034-5377",
doi="",
url="http://dx.doi.org/"
}