@article{ref1,
title="Traffic pollution and mental efficecy",
journal="Nature",
year="1970",
author="Lewis, J. and Baddeley, A. D. and Bonham, K. G. and Lovett, D.",
volume="225",
number="5227",
pages="95-97",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-0836",
doi="",
url="http://dx.doi.org/"
}