@article{ref1,
title="Pavement-marking materials: an annotated bibliography",
journal="Highway Research Board bulletin",
year="1952",
author="",
volume="57",
number="",
pages="99-128",
abstract="An annotated bibliography is presented of 234 references arranged by year of issue on pavement marking materials.<p />",
language="en",
issn="0073-2206",
doi="",
url="http://dx.doi.org/"
}