@article{ref1,
title="The aged and retiring pilot",
journal="Journal of aviation medicine",
year="1955",
author="Edwards, H. K.",
volume="26",
number="1",
pages="73-75",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0095-991X",
doi="",
url="http://dx.doi.org/"
}