@article{ref1,
title="On the "traffic fitness of varilux glasses"",
journal="Klinische Monatsblätter für Augenheilkunde (1963)",
year="1968",
author="Bruens, E.",
volume="152",
number="4",
pages="598-599",
abstract="Abstract unavailable.",
language="",
issn="0023-2165",
doi="",
url="http://dx.doi.org/"
}