@book { VirtuelleProjektteams,
    title = "Virtuelle Projektteams",
    subtitle = "Projektmanagement mit räumlich verteilten Strukturen",
    author = "Carsten {Krämer}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832459215",
    url = "https://m.diplom.de/document/221374"
}