@misc{Hecker_Johannes_(1625-1675)_Johannis,
 author={Hecker, Johannes (1625-1675)},
 howpublished={online},
 publisher={Szymon Reiniger},
 language={lat},
 title={Johannis Heckeri Motuum Cælestium Ephemerides Ab Anno Æ. V. M DC LXVI ad M DC LXXX. : Ex observationibus [...] Tychonis Brahei, & Joh. Kepleri [...]. Ad Meridianum Uraniburgicum in freto Cimbrico. Cum Introductione in eas},
 type={starodruk},
 keywords={efemerydy (astronomia)},
}