@book { AnalysederStudiendauerunddesStudienabbruchRisikos,
    title = "Analyse der Studiendauer und des Studienabbruch-Risikos",
    author = "Günther {Sedlacek}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b13923",
    url = "https://www.peterlang.com/document/1068470"
}