@book { SpanischesAnwaltshaftungsrecht,
    title = "Spanisches Anwaltshaftungsrecht",
    author = "Ingo {Müller}",
    year = "2011",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-00425-0",
    url = "https://www.peterlang.com/document/1044555"
}