@book { WasfreinGlck,
    title = "Was für ein Glück?",
    author = "Dominik {Becher} and Elmar {Schenkel}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1136139"
}