@book { RilkesWelt,
    title = "Rilkes Welt",
    subtitle = "Festschrift für August Stahl zum 75. Geburtstag",
    author = "Andrea {Hübener} and Rätus {Luck} and Renate {Scharffenberg} and Erich {Unglaub} and William {Waters}",
    year = "2009",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107322"
}