@article{ref1,
title="Age restriction on bus driver selection",
journal="Journal of human ergology",
year="1988",
author="Shephard, R. J. and Prien, E. P. and Hughes, G. L.",
volume="17",
number="2",
pages="119-138",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0300-8134",
doi="",
url="http://dx.doi.org/"
}