@book{60078,
  author       = {{Hilgert, Joachim}},
  isbn         = {{9783662694114}},
  issn         = {{2731-3824}},
  publisher    = {{Springer Berlin Heidelberg}},
  title        = {{{Mathematical Structures}}},
  doi          = {{10.1007/978-3-662-69412-1}},
  year         = {{2024}},
}

@book{57543,
  author       = {{Hilgert, Joachim}},
  isbn         = {{9783662694114}},
  issn         = {{2731-3824}},
  publisher    = {{Springer Berlin Heidelberg}},
  title        = {{{Mathematical Structures}}},
  doi          = {{10.1007/978-3-662-69412-1}},
  year         = {{2024}},
}