@article{ref1,
title="Head injuries in childhood",
journal="Helvetica Chirurgica Acta",
year="1961",
author="Rickham, P. P.",
volume="28",
number="",
pages="560-575",
abstract="Abstract unavailable.",
language="",
issn="0018-0181",
doi="",
url="http://dx.doi.org/"
}