@book { ZurDifferenzvonFremdundSelbstorganisation,
    title = "Zur Differenz von Fremd- und Selbstorganisation",
    author = "Mathias {Jahn}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1108340"
}