@article{ref1,
title="Friends and Family: Implications for Youth Tractor Safety",
journal="Journal of safety research",
year="1998",
author="Ritzel, Dale O. and DeBarr, KA and Kittleson, MJ and Wright, WR",
volume="29",
number="2",
pages="87-95",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0022-4375",
doi="",
url="http://dx.doi.org/"
}