@article{ref1,
title="Tests of reflective signing",
journal="Traffic engineering",
year="1976",
author="Nettleton, TJ",
volume="46",
number="3",
pages="24-30",
abstract="A series of recommendations is presented as a result of the field testing of reflective signs subjected to extreme temperature changes or snow burial.<p />",
language="",
issn="0041-0675",
doi="",
url="http://dx.doi.org/"
}