@incollection{UBHD-68223906,
  author={Braun-Munzinger, Peter and Heppe, Ingrid and Stachel, Johanna},
  title={Chemical equilibration in Pb+Pb collisions at the SPS},
  year={1999},
  language={eng},
  note={Gesehen am 26.02.2018},
  booktitle={De.arxiv.org},
}
@article{UBHD-68223905,
  author={Braun-Munzinger, Peter and Heppe, Ingrid and Stachel, Johanna},
  title={Chemical equilibration in Pb + Pb collisions at the SPS},
  year={2000},
  pages={15-20},
  language={eng},
  issn={1873-2445},
  volume={465},
  number={1},
  note={Gesehen am 26.02.2018},
  journal={Physics letters},
  doi={10.1016/S0370-2693(99)01076-X},
}