@article{ref1,
title="Shade-tree psychophysics: models, mathematical and concrete, for the simulation of ageing",
journal="Studies in health technology and informatics",
year="1998",
author="Harrington, T. and Graafmans, J. and Hermens, Y. and de Weerd, W.",
volume="48",
number="",
pages="115-119",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0926-9630",
doi="",
url="http://dx.doi.org/"
}