@misc{Niedzielski_Andrzej_Substellar-mass,
 author={Niedzielski, Andrzej},
 copyright={Niedzielski, Andrzej},
 address={Toruń},
 howpublished={online},
 publisher={Uniwersytet Mikołaja Kopernika},
 language={eng},
 type={preprint},
 title={Substellar-mass companions to the K-dwarf BD +14 4559 and the K-giants HD 240210 and BD +20 2457},
 keywords={astrofizyka},
}