@book { DieUnvereinbarkeitzweierungleicherWelten,
    title = "Die Unvereinbarkeit zweier ungleicher Welten",
    author = "Hans-Georg {Wendland}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640807222",
    url = "https://www.hausarbeiten.de/document/165107"
}