@book { DerBeweisderKausalittimAnwaltshaftungsproze,
    title = "Der Beweis der Kausalität im Anwaltshaftungsprozeß",
    author = "Thorsten {Mätzig}",
    year = "2001",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1091543"
}