@book { ImpressionismusinderdeutschenDichtung,
    title = "Impressionismus in der deutschen Dichtung",
    author = "Hartmut {Marhold}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1075004"
}