@article{ref1,
title="The simulation of weightlessness using water immersion techniques: an annotated bibliography",
journal="Human factors",
year="1969",
author="Duddy, J. H.",
volume="11",
number="5",
pages="507-540",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}