@article{ref1,
title="Advanced vision research for extended spaceflight",
journal="Aerospace medicine",
year="1967",
author="Jones, W. L. and Parker, J. F. Jr and Allen, W. H.",
volume="38",
number="5",
pages="475-478",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}