@article{Hoferichter:2020xO,
  author = "Hoferichter, Martin  and  Ruiz de Elvira, Jacobo  and  Kubis, Bastian  and  Meißner, Ulf-Gerrit",
  title = "{Roy–Steiner equations for pion–nucleon scattering and the pion–nucleon $σ$-term}",
  doi = "10.22323/1.317.0010",
  journal = "PoS",
  year = 2020,
  volume = "CD2018",
  pages = "010"
}