@article{ref1,
title="Human visual sampling processes: a simulation validation study. NASA CR-1258",
journal="NASA contractor report. NASA CR.",
year="1968",
author="Senders, J. W. and Carbonell, J. R. and Ward, J. L.",
volume="",
number="",
pages="1-103",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0565-7059",
doi="",
url="http://dx.doi.org/"
}