@article{ref1,
title="Human performance for military and civilian operations in space",
journal="Annals of the New York Academy of Sciences",
year="1965",
author="Grether, W. F.",
volume="134",
number="1",
pages="398-412",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0077-8923",
doi="",
url="http://dx.doi.org/"
}