@book { InstitutionalisiertesControllingalsRisikoTrger,
    title = "Institutionalisiertes Controlling als Risiko-Träger",
    author = "Jens-R. {Olesch}",
    year = "2019",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b10604",
    url = "https://www.peterlang.com/document/1110007"
}