@inproceedings{Benedikt:2016pc,
  author = "Benedikt, Michael  and  Zimmermann, Frank",
  title = "{Future High Energy Circular Colliders}",
  doi = "10.22323/1.245.0052",
  booktitle = "Proceedings of XXVII International Symposium on Lepton Photon Interactions at High Energies {\textemdash} PoS(LeptonPhoton2015)",
  year = 2016,
  volume = "245",
  pages = "052"
}