@misc{Helmolt_Hans_Ferdinand_(1865-1929)_Nikolaus,
 author={Helmolt, Hans Ferdinand (1865-1929)},
 address={Königstein},
 howpublished={online},
 publisher={W. Andermann},
 language={ger},
 type={artykuł},
 title={Nikolaus Copernicus ; [obwohl der grosse Astronom...]},
}