@book { Handlungsnormen,
    title = "Handlungsnormen",
    subtitle = "Typologie und Logik",
    author = " {Anonym}",
    year = "2005",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1096964"
}