@book { DiePartikulogie,
    title = "Die Partikulogie",
    subtitle = "Grundlage für die Psychotherapie in einem geeinten Europa",
    author = "David {Leitha}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832453572",
    url = "https://m.diplom.de/document/220920"
}