@article{ref1,
title="Development of visual simulation techniques for astronautical flight training. Volume ii. Image assembly techniques for visual simulation of orbiting flight. Techn docum rep amrl-tdr-63-54(ii)",
journal="Aerospace medical research laboratories technical reports",
year="1963",
author="Gerhardt, L. and Johnson, A. B.",
volume="",
number="",
pages="1-70",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0192-317X",
doi="",
url="http://dx.doi.org/"
}