@article{ref1,
title="Pattern walking under three conditions of available visual cues",
journal="American journal of mental deficiency",
year="1969",
author="Keogh, B. K.",
volume="74",
number="3",
pages="376-381",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-9351",
doi="",
url="http://dx.doi.org/"
}