@book { MehrebenensystemimGesundheitswesen,
    title = "Mehrebenensystem im Gesundheitswesen",
    author = "Indra {Spiecker gen. Döhmann}",
    year = "2022",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b20047",
    url = "https://www.peterlang.com/document/1254618"
}