@book { MultimedialeSystemealsHerausforderungfrdenHandel,
    title = "Multimediale Systeme als Herausforderung für den Handel",
    author = "Guido {Abeln}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832434786",
    url = "https://m.diplom.de/document/219144"
}