@book { SchopenhauersKritikderHoffnung,
    title = "Schopenhauers Kritik der Hoffnung",
    author = "Ortrun {Schulz}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1094236"
}