@article{ref1,
title="Vision at the workplace: Part I -- Guidelines for the practitioner",
journal="International journal of industrial ergonomics",
year="1992",
author="Konz, S.",
volume="10",
number="1-2",
pages="139-143",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0169-8141",
doi="",
url="http://dx.doi.org/"
}