@article{ref1,
title="The visual subsystem concept and spacecraft illumination",
journal="Human factors",
year="1963",
author="Urmer, A. H. and Jones, E. R.",
volume="5",
number="",
pages="275-283",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}