@book { HandeltreibenmitBetubungsmitteln,
    title = "Handeltreiben mit Betäubungsmitteln",
    author = "Christoph {Skoupil}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-01585-0",
    url = "https://www.peterlang.com/document/1046058"
}