@book { Enregisterment,
    title = "Enregisterment",
    author = "Lieselotte {Anderwald} and Jarich {Hoekstra}",
    year = "2017",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-07095-8",
    url = "https://www.peterlang.com/document/1050733"
}