@article{ref1,
title="Not all risk is bad, playgrounds as a learning environment for children",
journal="International journal of injury control and safety promotion",
year="2006",
author="Mitchell, Rebecca J. and Cavanagh, Margaret and Eager, David B. M.",
volume="13",
number="2",
pages="122-124",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1745-7300",
doi="10.1080/17457300500310269",
url="http://dx.doi.org/10.1080/17457300500310269"
}