@book { Poseidon,
    title = "Poseidon",
    subtitle = "Herausgegeben und bearbeitet von Michael Zuzanek",
    author = " {Anonym}",
    year = "2009",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1106399"
}