@article{ref1,
title="The red-green blind eye",
journal="Practitioner",
year="1982",
author="Logan, J. S.",
volume="226",
number="1367",
pages="879-883",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0032-6518",
doi="",
url="http://dx.doi.org/"
}