@article{ref1,
title="Safety on ladders: an ergonomic design approach",
journal="Applied ergonomics",
year="1976",
author="Jüptner, H.",
volume="7",
number="4",
pages="221-223",
abstract="By studying the interactions between the user and a ladder or steps, with different shaped rungs, the author determines a preferred rung shape for improved ladder safety.<p /> <p>Language: en</p>",
language="en",
issn="0003-6870",
doi="",
url="http://dx.doi.org/"
}