@article{ref1,
title="A general survey of the walking habits of individuals",
journal="Ergonomics",
year="1972",
author="Marsden, J. P. and Montgomery, S. R.",
volume="15",
number="4",
pages="439-451",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0014-0139",
doi="",
url="http://dx.doi.org/"
}