@book { ArztundPraxisabgabe,
    title = "Arzt und Praxisabgabe",
    author = "Peter {Wigge} and Georg {Kirschner}",
    year = "2016",
    publisher = "Deutscher Ärzteverlag",
    address = "Köln, Germany",
    doi = "10.47420/9783769135992",
    url = "https://deutscheraerzteverlag.openpublishing.com/document/390663"
}