@article{ref1,
title="Description of a Machine for Measuring a Ship's Way through the Sea",
journal="Transactions of the American Philosophical Society",
year="1786",
author="Hopkinson, F.",
volume="2",
number="",
pages="159-159",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0065-9746",
doi="10.2307/1005173",
url="http://dx.doi.org/10.2307/1005173"
}