@book { CaseManagementEineEinfhrung,
    title = "Case Management. Eine Einführung",
    author = "Christian {Preiss}",
    year = "2013",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656542230",
    url = "https://www.hausarbeiten.de/document/264684"
}