
@misc{junker-2010,
  title = "{Diskrete Algebraische Strukturen}", 
  author = "Markus Junker",
  note = "German lecture notes from Mathematisches Institut Albert{-}Ludwigs{-}Universit{\"a}t Freiburg",
  year = 2010
}

@book{mazur-2010,
  title = "Combinatorics: a guided tour",
  author = "Mazur, David R.",
  series = "MAA textbooks",
  publisher = "Mathematical Association of America",
  year = 2010
}
