@article{ref1,
title="Coin ingestion: unusual appearance of the penny in a child",
journal="Radiology",
year="1986",
author="Fernbach, S. K. and Tucker, G. F.",
volume="158",
number="2",
pages="512-512",
abstract="The United States of America changed the composition of the penny in 1982. It is now a copper-plated, zinc-based coin. Erosions of the edge of this new coin were observed when it was impacted in the esophagus of a 13-month-old child.<p /><p>Language: en</p>",
language="en",
issn="0033-8419",
doi="10.1148/radiology.158.2.3941880",
url="http://dx.doi.org/10.1148/radiology.158.2.3941880"
}