@book { Guntherderschwacheknec,
    title = "Gunther – der schwache 'künec'?",
    author = "Torben {Fischer}",
    year = "2009",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640348497",
    url = "https://www.hausarbeiten.de/document/128479"
}