@book { HerkunftsweltundHeterotopien,
    title = "Herkunftswelt und Heterotopien",
    author = "Rainer {Vollath}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1091735"
}