@article{ref1,
title="The essence of commodification: caffeine dependencies in the early modern world",
journal="Journal of social history",
year="2001",
author="Jamieson, R. W.",
volume="35",
number="2",
pages="269-294",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-4529",
doi="",
url="http://dx.doi.org/"
}