@article{ref1,
title="On george Nasmyth's patent girders and fire-proof floors",
journal="Proceedings of the institution of mechanical engineers",
year="1849",
author="",
volume="1",
number="3",
pages="27-32",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0020-3483",
doi="10.1243/PIME_PROC_1847_001_041_02",
url="http://dx.doi.org/10.1243/PIME_PROC_1847_001_041_02"
}