@article{ref1,
title="On the psychophysical law",
journal="Psychological review",
year="1957",
author="Stevens, S. S.",
volume="64",
number="3",
pages="153-181",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0033-295X",
doi="10.1037/h0046162",
url="http://dx.doi.org/10.1037/h0046162"
}