@article{ref1,
title="Ultralight aircraft accidents",
journal="Annals of emergency medicine",
year="1987",
author="Masius, W. and Knight, T.",
volume="16",
number="12",
pages="1413-1414",
abstract="Abstract unavailable.",
language="",
issn="0196-0644",
doi="",
url="http://dx.doi.org/"
}