@article{ref1,
title="The effects of color on human perception of load heaviness",
journal="Journal of safety research",
year="1990",
author="Pongpatana, N. and Karwowski, W.",
volume="21",
number="4",
pages="167-167",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0022-4375",
doi="",
url="http://dx.doi.org/"
}