@book { HeroinabgabestattMethadonsubstitution,
    title = "Heroinabgabe statt Methadonsubstitution",
    author = "Michael {Rapp}",
    year = "2004",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832469696",
    url = "https://m.diplom.de/document/222301"
}