@article{ref1,
title="Problems of construction, furniture and traffic for the disabled",
journal="Praxis (Hallwag)",
year="1968",
author="Oppikofer, K.",
volume="57",
number="24",
pages="851-856",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0369-8394",
doi="",
url="http://dx.doi.org/"
}