@article{ref1,
title="Proposed Universal Safety Symbol for Drug Hazards in Aviation",
journal="Aerospace medicine",
year="1964",
author="Rickard, HJ",
volume="35",
number="3",
pages="278-278",
abstract="[Abstract unavailable]  Language: en",
language="",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}