@article{ref1,
title="A restricted medical certification for civilian pilots",
journal="Journal of aviation medicine",
year="1955",
author="Coates, T. A.",
volume="26",
number="1",
pages="70-72",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0095-991X",
doi="",
url="http://dx.doi.org/"
}