@article{ref1,
title="The influence of standards on psychophysical judgments",
journal="Perceptual and motor skills",
year="1955",
author="Engen, Trygg and Levy, Nissim",
volume="5",
number="3",
pages="193-197",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0031-5125",
doi="10.2466/pms.1955.5.3.193",
url="http://dx.doi.org/10.2466/pms.1955.5.3.193"
}