@book { Consuetudoconsuetudinevincitur,
    title = "Consuetudo consuetudine vincitur",
    author = "Theo {Klausmann}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1095480"
}