@article{ref1,
title="The twelve year battle for a barrier free METRO",
journal="American rehabilitation",
year="1976",
author="Heddinger, R. W.",
volume="1",
number="5",
pages="7-10",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0362-4048",
doi="",
url="http://dx.doi.org/"
}