@article{ref1,
title="On cases of foreign bodies in the respiratory tract of children",
journal="Polski Tygodnik Lekarski",
year="1963",
author="Brzezinska, H.",
volume="18",
number="",
pages="432-434",
abstract="<p>[Abstract unavailable]</p><p>Language: pl</p>",
language="pl",
issn="0032-3756",
doi="",
url="http://dx.doi.org/"
}