@article{UBHD-68845856,
  author={Levin, Ingeborg and Karstens, Ute and Hammer, Samuel and Della Coletta, Julian and Maier, Fabian and Gachkivskyi, Maksym},
  title={Limitations of the radon tracer method (RTM) to estimate regional greenhouse gas (GHG) emissions},
  subtitle={a case study for methane in Heidelberg},
  year={2021},
  pages={17907-17926},
  language={eng},
  issn={1680-7324},
  volume={21},
  number={23},
  note={Gesehen am 20.12.2021},
  journal={Atmospheric chemistry and physics},
  doi={10.5194/acp-21-17907-2021},
}
@article{UBHD-69233773,
  author={Maier, Fabian and Levin, Ingeborg and Gachkivskyi, Maksym and R{\"o}denbeck, Christian and Hammer, Samuel},
  title={Estimating regional fossil fuel CO2 concentrations from 14CO2 observations},
  subtitle={challenges and uncertainties},
  year={2023},
  pages={1-24},
  language={eng},
  issn={1471-2962},
  volume={381},
  note={Ver{\"o}ffentlicht: 09. Oktober 2023 ; Im Titel ist die Zahl "2" tiefgestellt, die Zahl "14" hochgestellt ; Gesehen am 15.07.2024},
  journal={Philosophical transactions of the Royal Society},
  doi={10.1098/rsta.2022.0203},
}
@incollection{UBHD-69177646,
  author={Maier, Fabian and R{\"o}denbeck, Christian and Levin, Ingeborg and Gerbig, Christoph and Gachkivskyi, Maksym and Hammer, Samuel},
  title={Potential of 14C-based versus ∆CO-based ∆ffCO2 observations to estimate urban fossil fuel CO2(ffCO2) emissions},
  year={2023},
  pages={1-30},
  language={eng},
  note={Im Titel ist die Zahl 14 hochgestellt, 2 jeweils tiefgestellt ; Gesehen am 05.02.2024},
  booktitle={EGUsphere},
  doi={10.5194/egusphere-2023-1239},
}
@incollection{UBHD-69177645,
  author={Maier, Fabian and Levin, Ingeborg and Conil, Sébastien and Gachkivskyi, Maksym and Denier van der Gon, Hugo A. C. and Hammer, Samuel},
  title={Uncertainty of continuous ∆CO-based ∆ffCO2 estimates derived from 14C flask and bottom-up ∆CO/∆ffCO2 ratios},
  year={2023},
  pages={1-31},
  language={eng},
  note={Im Titel ist die Zahl 2 jeweils tiefgestellt, 14 ist hochgestellt ; Gesehen am 05.02.2024},
  booktitle={EGUsphere},
  doi={10.5194/egusphere-2023-1237},
}
@article{UBHD-69290927,
  author={R{\"o}denbeck, Christian and Adcock, Karina E. and Eritt, Markus and Gachkivskyi, Maksym and Gerbig, Christoph and Hammer, Samuel and Jordan, Armin and Keeling, Ralph F. and Levin, Ingeborg and Maier, Fabian and Manning, Andrew C. and Moossen, Heiko and Munassar, Saqr and Pickers, Penelope A. and Rothe, Michael and Tohjima, Yasunori and Zaehle, S{\"o}nke},
  title={The suitability of atmospheric oxygen measurements to constrain western European fossil-fuel CO2 emissions and their trends},
  year={2023},
  pages={15767-15782},
  language={eng},
  issn={1680-7324},
  volume={23},
  number={24},
  note={Im Titel ist "2" tiefgestellt, ; Online ver{\"o}ffentlicht: 22. Dezember 2023 ; Gesehen am 15.01.2025},
  journal={Atmospheric chemistry and physics},
  doi={10.5194/acp-23-15767-2023},
}