@book { GesundheitswesenSchweiz,
    title = "Gesundheitswesen Schweiz",
    author = "Rajko {Pflügel}",
    year = "2010",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640776573",
    url = "https://www.hausarbeiten.de/document/163443"
}