@article{ref1,
title="Some notes on the early history of railway gauge",
journal="Proceedings of the institution of mechanical engineers",
year="1875",
author="Pole, William",
volume="26",
number="1",
pages="66-91",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0020-3483",
doi="10.1243/PIME_PROC_1875_026_010_02",
url="http://dx.doi.org/10.1243/PIME_PROC_1875_026_010_02"
}