@incollection{UBHD-68965281,
  author={Fl{\"o}rchinger, Stefan and Giacalone, Giuliano and Heyen, Lars H. and Tharwat, Leena},
  title={How many particles do make a fluid?},
  subtitle={Qualifying collective behavior in expanding ultracold gases},
  year={2021},
  pages={1-28},
  language={eng},
  note={Gesehen am 19.09.2022},
  booktitle={Arxiv},
  doi={10.48550/arXiv.2111.13591},
}
@article{UBHD-68932185,
  author={Fl{\"o}rchinger, Stefan and Giacalone, Giuliano and Heyen, Lars H. and Tharwat, Leena},
  title={Qualifying collective behavior in expanding ultracold gases as a function of particle number},
  year={2022},
  pages={1-14},
  language={eng},
  issn={2469-9993},
  volume={105},
  note={Gesehen am 20.06.2022},
  journal={Physical review},
  doi={10.1103/PhysRevC.105.044908},
}