@article{Lehnert:2021pa,
  author = "Lehnert, Bjoern",
  title = "{Lepton Number Violation and Neutrino Masses}",
  doi = "10.22323/1.390.0027",
  journal = "PoS",
  year = 2021,
  volume = "ICHEP2020",
  pages = "027"
}