@article{ref1,
title="An investigation of take-off impulses in two styles of high jumping",
journal="Research quarterly",
year="1968",
author="Hay, J. G.",
volume="39",
number="4",
pages="983-992",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0034-5377",
doi="",
url="http://dx.doi.org/"
}