@article{ref1,
title="Foreign body in bile ducts",
journal="Wiadomosci Lekarskie",
year="1975",
author="Lapinski, J. and Gulczynski, A.",
volume="28",
number="4",
pages="319-320",
abstract="<p>[Abstract unavailable]</p><p>Language: pl</p>",
language="pl",
issn="0043-5147",
doi="",
url="http://dx.doi.org/"
}