@article{Colangelo:2023X+,
  author = "Colangelo, Gilberto  and  Hoferichter, Martin  and  Stoffer, Peter",
  title = "{Puzzles in the hadronic contributions to the muon anomalous magnetic moment}",
  doi = "10.22323/1.445.0042",
  journal = "PoS",
  year = 2023,
  volume = "FPCP2023",
  pages = "042"
}