@book { LaudineFeeMinneoderLandesherrin,
    title = "Laudine - Fee, Minne- oder Landesherrin?",
    author = "Andrea {Surner}",
    year = "2009",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640481545",
    url = "https://www.hausarbeiten.de/document/138737"
}