@misc{Winiarski_Marcin_Preface_2013,
 author={Winiarski, Marcin},
 copyright={Copyright by Wydawnictwo Uniwersytetu Wrocławskiego Sp. z o.o.},
 address={Wrocław},
 howpublished={online},
 year={2013},
 publisher={Wydawnictwo Uniwersytetu Wrocławskiego},
 language={eng},
 title={Preface},
 keywords={preface},
}