@inbook{Tracy_2003,
title={On the Dual Origins of Long-Term Urban Debt in Medieval Europe},
ISBN={9782503538808},
ISSN={2294-8368},
url={http://dx.doi.org/10.1484/m.seuh-eb.3.1938},
DOI={10.1484/m.seuh-eb.3.1938},
booktitle={Urban public debts,
urban government and the market for annuities in Western Europe (14th-18th centuries)},
publisher={Brepols Publishers},
author={Tracy,
James D.},
year={2003},
month=jan,
pages={13–24} }