@book { XMLundITSecurity,
    title = "XML und IT-Security",
    subtitle = "Konzeption einer sicheren Web Services-Infrastruktur",
    author = "Thorsten {Merz}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832462338",
    url = "https://m.diplom.de/document/221680"
}