@book { NichtgemeldeteerlaubnispflichtigeSchusswaffeninBayern,
    title = "Nicht gemeldete erlaubnispflichtige Schusswaffen in Bayern",
    author = "Tanja {Böhm}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1103684"
}