@article{ref1,
title="Magnetical Observations in the Britannia and Conway Tubular Iron Bridges",
journal="Philosophical transactions of the Royal Society of London",
year="1873",
author="Airy, George Biddell",
volume="163",
number="",
pages="331-339",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0261-0523",
doi="",
url="http://dx.doi.org/"
}