@misc{Jan_Barcz_Some_2017,
 author={Jan Barcz},
 address={Poznań},
 year={2017},
 contents={Strona 145-156},
 publisher={Poznań : IZ,},
 language={pol},
 title={Some Reflections on the 25th Anniversary of the Polish-German Treaty},
 type={text},
}