@book { MassCustomizationundOnetoOneMarketing,
    title = "Mass Customization und One-to-One Marketing",
    author = "Moritz {Bleil}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832444006",
    url = "https://m.diplom.de/document/220009"
}