@article{ref1,
title="Pole vaulting injuries to young persons and top-ranking athletes",
journal="Journal of sports medicine and physical fitness",
year="1965",
author="Wallgren, G. R.",
volume="5",
number="3",
pages="156-162",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-4707",
doi="",
url="http://dx.doi.org/"
}