@article{ref1,
title="Dentures in the esophagus",
journal="International surgery",
year="1971",
author="Gupta, O. P.",
volume="55",
number="2",
pages="142-148",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0020-8868",
doi="",
url="http://dx.doi.org/"
}