@article{ref1,
title="Incised grids: enhancing the readability of tangible graphs for the blind",
journal="Human factors",
year="1984",
author="Barth, J. L.",
volume="26",
number="1",
pages="61-70",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}