@article{ref1,
title="Low back injuries--results of treatment",
journal="South African journal of surgery",
year="1972",
author="Kark, W.",
volume="10",
number="2",
pages="89-95",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0038-2361",
doi="",
url="http://dx.doi.org/"
}