@article{ref1,
title="Air resistance of crash helmets",
journal="Proceedings of the International Research Council on the Biomechanics of Injury conference",
year="1976",
author="Van Faassen, F. and Stassen, E.g.m. and Willig, A.p. and Zijp, E. M. and Bastiaanse, J.c. and Brockhoff, H.s.t. and Oudesluys, C.",
volume="4",
number="",
pages="3323404-3323404",
abstract="Air resistance of crash helmets with visors opened and closed was measured as well as the opposing muscular force. The angle of inclination of the opened visor seemed to be an important parameter. Up to 15% of the males and 64% of the females cannot match air resistance forces.<p />",
language="en",
issn="2235-3151",
doi="",
url="http://dx.doi.org/"
}