@book { DieUnternehmenssteuerreform19992000,
    title = "Die Unternehmenssteuerreform 1999/2000",
    author = "Christoph {Prasse}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1095405"
}