@article{ref1,
title="Ballooning accidents",
journal="Aviation, space, and environmental medicine",
year="2006",
author="Cowl, Clayton T.",
volume="77",
number="9",
pages="989; autho-989; autho",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0095-6562",
doi="",
url="http://dx.doi.org/"
}