@book { KritischeAnalysevonGMPModellen,
    title = "Kritische Analyse von GMP-Modellen",
    author = "Julia Katharina {Voigtmann}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832462895",
    url = "https://m.diplom.de/document/221691"
}