@book { SystemtransformationdesGesundheitswesensindenLndernMittelundOsteuropas,
    title = "Systemtransformation des Gesundheitswesens in den Ländern Mittel- und Osteuropas",
    author = "Kornelia {van der Beek}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1092399"
}