@article{ref1,
title="Behaviour in conventional and extra-terrestial flight. Some future aspects of aviation medicine",
journal="Nature",
year="1959",
author="Stewart, W. K.",
volume="184",
number="",
pages="578-582",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-0836",
doi="",
url="http://dx.doi.org/"
}