@misc{Einmart_G.C._Planispherium,
 author={Einmart, G.C.},
 address={Norimbergæ},
 howpublished={online},
 publisher={Funck, David (1642-1709)},
 language={lat},
 title={Planispherium coeleste},
 keywords={17 w., kartografia, 18 w., planisfery, gwiazdozbiory},
}