@article{ref1,
title="Significance of hearing defects for traffic safety",
journal="Svenska läkartidningen",
year="1962",
author="Holst, H. E.",
volume="59",
number="",
pages="14-15",
abstract="Abstract unavailable.",
language="",
issn="0371-439X",
doi="",
url="http://dx.doi.org/"
}