@article{ref1,
title="Multiple-step strategies to recover from stumbling perturbations",
journal="Gait and posture",
year="2003",
author="van der Helm, FCT and Koopman, HFJM and Forner Cordero, A.",
volume="18",
number="1",
pages="47-59",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0966-6362",
doi="",
url="http://dx.doi.org/"
}