@book { NeueEntwicklungimPharmaMarketing,
    title = "Neue Entwicklung im Pharma-Marketing",
    author = "Guido {Pape}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832431693",
    url = "https://m.diplom.de/document/218865"
}