@book { DerBenutzungszwangimMarkengesetz,
    title = "Der Benutzungszwang im Markengesetz",
    author = "Volker {Schoene}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1095173"
}