@book { DieKonfessionspolitikindenhabsburgischenErblandenvonMaximilianIIbisFerdinandII,
    title = "Die Konfessionspolitik in den habsburgischen Erblanden von Maximilian II. bis Ferdinand II.",
    author = "Michael {Barthels}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832471934",
    url = "https://m.diplom.de/document/222497"
}