@article{ref1,
title="Color-blind drivers and traffic signals",
journal="CMAJ : Canadian Medical Association journal",
year="1993",
author="Whillans, M. G.",
volume="149",
number="11",
pages="1630-1630",
abstract="Abstract unavailable.",
language="",
issn="0820-3946",
doi="",
url="http://dx.doi.org/"
}