@book { JahrbuchderSicherheitswirtschaft2018,
    title = "Jahrbuch der Sicherheitswirtschaft 2018",
    author = "Bartosz {Makowicz} and Rolf {Stober}",
    year = "2019",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b15901",
    url = "https://www.peterlang.com/document/1057969"
}