@book { IgropewithadirtyhandZurProduktivittdesNegativenbeiWBYeats,
    title = "«I grope with a dirty hand»: Zur Produktivität des Negativen bei W. B. Yeats",
    author = "Walter {Gebert}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1105288"
}