@book { DerKriegundseinevirtuellenFacetten,
    title = "Der Krieg und seine virtuellen Facetten",
    author = "Marc {Sehr}",
    year = "2010",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836642217",
    url = "https://m.diplom.de/document/227578"
}