@misc{Kopernik_Mikołaj_(1473-1543)_De,
 author={Kopernik, Mikołaj (1473-1543)},
 howpublished={online},
 language={lat},
 type={rękopis},
 title={De revolutionibus libri sex},
 keywords={astronomia 16 w., Rheticus (1514-1576)},
}