@article{ref1,
title="An investigation of various measures used in impact testing of protective headgear",
journal="Journal of sports medicine and physical fitness",
year="1964",
author="Nelson, R. C. and Alexander, J. F. and Montoye, H. J. and Vanhuss, W. D.",
volume="30",
number="",
pages="94-102",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-4707",
doi="",
url="http://dx.doi.org/"
}