@article{Kachelriess:2003dd,
  author = "Kachelriess, Michael",
  title = "{Particle physics motivated solutions to the UHECR puzzle}",
  doi = "10.22323/1.010.0027",
  journal = "PoS",
  year = 2003,
  volume = "AHEP2003",
  pages = "027"
}