@article{ref1,
title="On-line personnel testing for naval aviation",
journal="Aerospace medicine",
year="1968",
author="Waldeisen, L. E. and Curran, P. M. and Wherry, R. J.",
volume="39",
number="1",
pages="31-33",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}