@article{ref1,
title="Nazi policy of biological extermination of Polish population of Upper Silesia",
journal="Przeglad Lekarski",
year="1973",
author="Moska, D.",
volume="30",
number="1",
pages="41-52",
abstract="<p>[Abstract unavailable]</p><p>Language: pl</p>",
language="pl",
issn="0033-2240",
doi="",
url="http://dx.doi.org/"
}