@book { EntwicklungdesRittertumsanderEntwicklungdesWortesmiles,
    title = "Entwicklung des Rittertums an der Entwicklung des Wortes miles",
    author = "René {König}",
    year = "2001",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638991193",
    url = "https://www.hausarbeiten.de/document/100695"
}