@article{ref1,
title="Towers, lights and safety",
journal="Journal of air medical transport",
year="1990",
author="Strodel, R. and Dunstan, J. and Bothwell, J.",
volume="9",
number="2",
pages="3, 5-3, 5",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1046-9095",
doi="",
url="http://dx.doi.org/"
}