@article{ref1,
title="School bullying and later criminal offending",
journal="Criminal behaviour and mental health",
year="2011",
author="Farrington, David P. and Ttofi, Maria M. and Lösel, Friedrich",
volume="21",
number="2",
pages="77-79",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0957-9664",
doi="10.1002/cbm.807",
url="http://dx.doi.org/10.1002/cbm.807"
}