@article{ref1,
title="Drug and toxic hazards in general aviation",
journal="Aerospace medicine",
year="1969",
author="Dille, J. R. and Mohler, S. R.",
volume="40",
number="2",
pages="191-195",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}