@book { IchsahdesSommersletzteRosestehn,
    title = "«Ich sah des Sommers letzte Rose stehn ...»",
    author = "Hilmar {Grundmann}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097163"
}