@article{ref1,
title="Flight by periscope: making takeoffs and landings; the influence of image magnification, practice, and various conditions of flight",
journal="Human factors",
year="1966",
author="Roscoe, Stanley N. and Hasler, S. G. and Dougherty, D. J.",
volume="8",
number="1",
pages="13-40",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}