@book { WirkungsorientiertesControllingimpolitischadministrativenSystem,
    title = "Wirkungsorientiertes Controlling im politisch-administrativen System",
    author = "Andreas {Röhrig}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b13864",
    url = "https://www.peterlang.com/document/1068425"
}