@article{ref1,
title="Leisure activities and unemployment in adolescents",
journal="Nederlands Tijdschrift voor Geneeskunde",
year="1978",
author="de Vringer, R. E.",
volume="122",
number="40",
pages="1506-1508",
abstract="<p>[Abstract unavailable]</p><p>Language: nl</p>",
language="nl",
issn="0028-2162",
doi="",
url="http://dx.doi.org/"
}