@article{ref1,
title="Unusual foreign bodies in airways",
journal="Indian journal of chest diseases and allied sciences",
year="1987",
author="Yadav, S. P. and Wig, U. and Raj, B. and Chawla, R. K. and Yadav, J.",
volume="29",
number="1",
pages="41-43",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0377-9343",
doi="",
url="http://dx.doi.org/"
}