@book { DieLizenzkette,
    title = "Die Lizenzkette",
    author = "Anno {Haberer}",
    year = "2015",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-05729-4",
    url = "https://www.peterlang.com/document/1049498"
}