@article{ref1,
title="Proposed new test for aptitude screening of air traffic controller applicants",
journal="Aerospace medicine",
year="1973",
author="Cobb, B. B. and Mathews, J. J.",
volume="44",
number="2",
pages="184-189",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}