@article{ref1,
title="Fatigue in motorists",
journal="Lakartidningen",
year="1967",
author="Lisper, H. O.",
volume="64",
number="28",
pages="2829-2831",
abstract="Abstract unavailable.",
language="",
issn="0023-7205",
doi="",
url="http://dx.doi.org/"
}