@book { BibliothekundMedien332013Nr1,
    title = "Bibliothek und Medien 33 (2013). Nr. 1",
    author = "",
    year = "2013",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12940",
    url = "https://www.peterlang.com/document/1067500"
}