@article{AppellBritoReinwand2022,
  author    = {J{\"u}rgen Appell and Bel{\´e}n L{\´o}pez Brito and Simon Reinwand},
  title     = {Counterexamples on compositions},
  journal   = {Mathematische Semesterberichte},
  volume    = {70},
  number    = {1},
  doi       = {10.1007/s00591-022-00318-x},
  year      = {2022},
}