@article{ref1,
title="The design and usage of highway hospital signs",
journal="Emergency medical services",
year="1978",
author="Acai, S. A.",
volume="7",
number="5",
pages="66, 68-66, 68",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0094-6575",
doi="",
url="http://dx.doi.org/"
}