@book { IndievierteExistenzvielleicht,
    title = "«In die vierte Existenz vielleicht»",
    author = "Hermann {Greissinger}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1073663"
}