@article{ref1,
title="The relationship between speed restrictions and head injury admissions to Groote Schuur hospital. an interim report",
journal="South African medical journal SAMJ",
year="1974",
author="De Villiers, J. C. and De Villiers, R. A.",
volume="48",
number="61",
pages="2546-2548",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0038-2469",
doi="",
url="http://dx.doi.org/"
}