@misc{Biskup_Marian_(1922-_)_Polish,
 author={Biskup, Marian (1922- )},
 copyright={Biskup, Marian},
 address={Warszawa},
 howpublished={online},
 publisher={PWN},
 language={eng},
 type={artykuł},
 title={Polish research on the life and wide-ranging activity of Nicholas Copernicus},
 keywords={Kopernik, Mikołaj (1473-1543), Kopernik jako polityk},
}