@article{ref1,
title="Drivers and road signs: a preliminary investigation of the capacity of car drivers to get information from road signs",
journal="Ergonomics",
year="1966",
author="Johansson, G. and Rumar, K.",
volume="9",
number="1",
pages="57-62",
abstract="Abstract unavailable.",
language="",
issn="0014-0139",
doi="",
url="http://dx.doi.org/"
}