@article{ref1,
title="On governing engines by regulating the expansion",
journal="Proceedings of the institution of mechanical engineers",
year="1882",
author="Hartnell, Wilson",
volume="33",
number="1",
pages="408-439",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0020-3483",
doi="10.1243/PIME_PROC_1882_033_024_02",
url="http://dx.doi.org/10.1243/PIME_PROC_1882_033_024_02"
}