@misc{Dalewski_Zbigniew_(1962–_)_Pro_cop.,
 author={Dalewski, Zbigniew (1962– )},
 editor={Institute of History of the Polish Academy of Sciences},
 copyright={Creative Commons Attribution BY-ND 4.0 license},
 address={Warszawa},
 howpublished={online},
 year={cop. 2013},
 publisher={Instytut Historii PAN},
 language={pol},
 title={Pro honore, non pro principali munere},
 type={Text},
 URL={http://rcin.org.pl/Content/64389/PDF/WA303_83957_I10030_Lustro-Dalewski.pdf},
 keywords={Poland - history - Boleslaus I, 992-1025, Congress of Gniezno (1000), gifts - social ascpects, gifts - Europe - history - to 1500, civilisation, medieval},
}