@article{ref1,
title="Aviation medicine",
journal="McGill medical journal",
year="1957",
author="Marshall, K. G.",
volume="26",
number="1",
pages="49-58",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0024-905X",
doi="",
url="http://dx.doi.org/"
}