@article{ref1,
title="Description of an improved safety valve, for locomotive, marine, and stationary steam boilers",
journal="Proceedings of the institution of mechanical engineers",
year="1855",
author="",
volume="6",
number="1",
pages="24-29",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0020-3483",
doi="10.1243/PIME_PROC_1855_006_008_02",
url="http://dx.doi.org/10.1243/PIME_PROC_1855_006_008_02"
}