@article{ref1,
title="Visual pigments and visual range underwater",
journal="Vision research",
year="1968",
author="Lythgoe, J. N.",
volume="8",
number="8",
pages="997-1011",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0042-6989",
doi="",
url="http://dx.doi.org/"
}