@article{ref1,
title="Tribal violence worsens humanitarian crisis in South Sudan",
journal="British medical journal: BMJ",
year="2012",
author="Moszynski, Peter",
volume="344",
number="online",
pages="e255-e255",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0959-8138",
doi="10.1136/bmj.e255",
url="http://dx.doi.org/10.1136/bmj.e255"
}