@article{ref1,
title="Description of an improved apparatus for working and interlocking railway signals and points",
journal="Proceedings of the institution of mechanical engineers",
year="1873",
author="Baines, William",
volume="24",
number="1",
pages="31-44",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0020-3483",
doi="10.1243/PIME_PROC_1873_024_008_02",
url="http://dx.doi.org/10.1243/PIME_PROC_1873_024_008_02"
}