@article{ref1,
title="Biomechanical aspects of jumping",
journal="Exercise and sport sciences reviews",
year="1975",
author="Hay, J. G.",
volume="3",
number="",
pages="135-161",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0091-6331",
doi="",
url="http://dx.doi.org/"
}