@conference{UBHD-67844107,
  author={Launhardt, Ralf and Quirrenbach, Andreas and Elias, Nicholas and Zhao-Geisler, Ronny and Reffert, Sabine},
  title={The ESPRI project},
  subtitle={astrometric exoplanet search with PRIMA},
  year={2008},
  pages={1-10},
  language={eng},
}
@incollection{UBHD-67845317,
  author={Quirrenbach, Andreas and Zhao-Geisler, Ronny and Elias, Nicholas and Reffert, Sabine},
  title={ESPRI},
  subtitle={Astrometric planet search with PRIMA at the VLTI},
  year={2011},
  pages={6 S.},
  language={eng},
  isbn={978-2-7598-0664-5},
  note={Gesehen am 14.07.2015},
  booktitle={Research, science and technology of brown dwarfs and exoplanets},
  editor={Martín, Eduardo L. and Ge, Jian and Lin, Weipeng},
  doi={10.1051/epjconf/20111607005},
}
@article{UBHD-67430505,
  author={Zhao-Geisler, Ronny and Quirrenbach, Andreas and K{\"o}hler, Rainer},
  title={The mid-infrared diameter of W Hydrae},
  year={2011},
  pages={A120},
  language={eng},
  issn={1432-0746},
  volume={530},
  note={Gesehen am 14.06.2013},
  journal={Astronomy and astrophysics},
  doi={10.1051/0004-6361/201016310},
}
@conference{UBHD-67844097,
  author={Zhao-Geisler, Ronny and Quirrenbach, Andreas and Reffert, Sabine},
  title={Preparing the exoplanet search with PRIMA},
  subtitle={searching for reference stars and target characterization},
  year={2008},
  pages={61-63},
  language={eng},
  isbn={978-0-521-87471-7},
}
@conference{UBHD-67844098,
  author={Zhao-Geisler, Ronny and Quirrenbach, Andreas and Reffert, Sabine},
  title={Preparing the exoplanet search with PRIMA},
  subtitle={searching for reference stars and target characterization},
  year={2008},
  pages={61-63},
  language={eng},
  issn={1743-9221},
  note={Gesehen am 10.07.2015},
  doi={10.1017/S1743921308016384},
}
@conference{UBHD-67844108,
  author={Zhao-Geisler, Ronny and Elias, Nicholas and Quirrenbach, Andreas and K{\"o}hler, Rainer},
  title={Simulations of imperfect PRIMA fringe sensing units and calibration strategies},
  year={2008},
  pages={1-10},
  language={eng},
}
@article{UBHD-67869716,
  author={Zhao-Geisler, Ronny and K{\"o}hler, Rainer and Quirrenbach, Andreas},
  title={Spectro-imaging of the asymmetric inner molecular and dust shell region of the mira variable W Hya with MIDI/VLTI},
  year={2015},
  pages={732-741},
  language={eng},
  issn={1538-3873},
  volume={127},
  number={954},
  note={Gesehen am 08.09.2015},
  journal={Publications of the Astronomical Society of the Pacific},
  doi={10.1086/682261},
}
@book{UBHD-66988493,
  author={Zhao-Geisler, Ronny},
  title={The surprising mid-IR appearance of the asymptotic giant branch stars R Aql, R Aqr, R Hya, V Hya and W Hya},
  subtitle={molecular and dust shell diameters and their pulsation dependence probed with the MIDI interferometer},
  year={2010},
  pages={Online-Ressource},
  language={eng and ger},
  note={Online publiziert: 2011},
  school={Heidelberg, Univ., Diss., 2010},
  keywords={Asymptotischer roter Riese / Interstellarer Staub / Interferometrie},
  url={http://archiv.ub.uni-heidelberg.de/volltextserver/volltexte/2011/11256},
  library={UB},
}
@book{UBHD-66981075,
  author={Zhao-Geisler, Ronny},
  title={The surprising mid-IR appearance of the asymptotic giant branch stars R Aql, R Aqr, R Hya, V Hya and W Hya},
  subtitle={molecular and dust shell diameters and their pulsation dependence probed with the MIDI interferometer},
  year={2010},
  pages={XVIII, 195 S.},
  language={eng and ger},
  note={Zsfassung in engl. und dt. Sprache},
  school={Heidelberg, Univ., Diss., 2010},
  keywords={Asymptotischer roter Riese / Interstellarer Staub / Interferometrie},
  library={UB [Signatur: 2011 U 27] ; PY [Signatur: <PY> PY Diss. WS10/11-16]},
}