@book { TheorieundPraxisvonKinderhusern,
    title = "Theorie und Praxis von Kinderhäusern",
    author = "Udo {Kohler}",
    year = "1997",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832406288",
    url = "https://m.diplom.de/document/216559"
}