@article{ref1,
title="Classification and regression trees",
journal="International journal of public health",
year="2012",
author="Speybroeck, N.",
volume="57",
number="1",
pages="243-246",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1661-8556",
doi="10.1007/s00038-011-0315-z",
url="http://dx.doi.org/10.1007/s00038-011-0315-z"
}