@inproceedings{Verbeke:2020sI,
  author = "Verbeke, Willem",
  title = "{Observation of single top quark production in association with a Z boson}",
  doi = "10.22323/1.364.0683",
  booktitle = "Proceedings of European Physical Society Conference on High Energy Physics {\textemdash} PoS(EPS-HEP2019)",
  year = 2020,
  volume = "364",
  pages = "683"
}