@article{ref1,
title="The derivation of human factor problems in space vehicles",
journal="American journal of medical technology",
year="1961",
author="Walker, R. Y.",
volume="27",
number="",
pages="263-272",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-9335",
doi="",
url="http://dx.doi.org/"
}