@article{ref1,
title="There is bullying and bullying",
journal="European journal of pediatrics",
year="2005",
author="van der Wal, M. F.",
volume="164",
number="2",
pages="117-118",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0340-6199",
doi="10.1007/s00431-004-1573-z",
url="http://dx.doi.org/10.1007/s00431-004-1573-z"
}