@book { WandelderBeschftigungsformen,
    title = "Wandel der Beschäftigungsformen",
    author = "Susanne {Zametzer}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832425210",
    url = "https://m.diplom.de/document/218314"
}