@article{ref1,
title="The mechanical efficiencies of running and bicycling against a horizontal impeding force",
journal="Internationale Zeitschrift für Angewandte Physiologie, Einschliesslich Arbeitsphysiologie",
year="1973",
author="Zacks, R. M.",
volume="31",
number="4",
pages="249-258",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0020-9376",
doi="",
url="http://dx.doi.org/"
}