@book { SteuerungderGmbHdurcheinenInterimManager,
    title = "Steuerung der GmbH durch einen Interim Manager",
    author = "Stefan {Jäkel}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b18061",
    url = "https://www.peterlang.com/document/1059381"
}