@misc{Errera_Paul_(1860-1922)_Ernest,
 author={Errera, Paul (1860-1922)},
 howpublished={online},
 publisher={M. Weissenbruch (Bruksela)},
 language={francuski},
 title={Ernest Nys},
 type={książka},
 keywords={Nys, Ernest (1851-1920), biografie},
}