@article{ref1,
title="The use of heart rate as an index of stress in blind pedestrians",
journal="Ergonomics",
year="1971",
author="Peake, P. and Leonard, J. A.",
volume="14",
number="2",
pages="189-204",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0014-0139",
doi="",
url="http://dx.doi.org/"
}