@book { DasTierschutzgesetzvom24Juli1972,
    title = "Das Tierschutzgesetz vom 24. Juli 1972",
    author = "Julius Ludwig {Pfeiffer}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097984"
}