@article{ref1,
title="A Review of the Tests for Colour Blindness",
journal="British medical journal: BMJ",
year="1891",
author="Edridge-Green, F. W.",
volume="2",
number="1600",
pages="470-471",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}