@article{ref1,
title="Retinal adaptation in night flying",
journal="Journal of aviation medicine",
year="1952",
author="Cibis, P. A.",
volume="23",
number="2",
pages="168-176",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0095-991X",
doi="",
url="http://dx.doi.org/"
}