@book { InderFreiheitdesGeistes,
    title = "In der Freiheit des Geistes",
    author = "Johann {Reikerstorfer} and Heinrich {Fasching}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1104826"
}