@article{ref1,
title="Traffic medicine. 8. car lights yesterday, today, and tomorrow",
journal="Lakartidningen",
year="1971",
author="Rumar, K.",
volume="68",
number="16",
pages="1906-1910",
abstract="Abstract unavailable.",
language="",
issn="0023-7205",
doi="",
url="http://dx.doi.org/"
}