@article{ref1,
title="Relationships between age, ATC experience, and job ratings of terminal area traffic controllers",
journal="Aerospace medicine",
year="1974",
author="Mathews, J. J. and Cobb, B. B.",
volume="45",
number="1",
pages="56-60",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}