@article{ref1,
title="Study of bicycle modifications using a motor driven treadmill-bicycle ergometer",
journal="Arbeitsphysiologie",
year="1953",
author="Astrand, P. O.",
volume="15",
number="1",
pages="23-32",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0365-0863",
doi="",
url="http://dx.doi.org/"
}