@article{ref1,
title="Trunk force development during static and dynamic lifts",
journal="Human factors",
year="1987",
author="Marras, W. S. and Rangarajulu, S. L. and Wongsam, P. E.",
volume="29",
number="1",
pages="19-29",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}