@book { NachzahlungbeiSelbstanzeige,
    title = "Nachzahlung bei Selbstanzeige",
    author = "Friedrich {Zimmermann}",
    year = "2001",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1091966"
}