@book { ImprovinganexistingCISbyexaminingcustomerdecisionsdevelopmentandplaningtoincreasetheeffectivenessforISCandISM,
    title = "Improving an existing CIS by examining customer decisions, development, and planing to increase the effectiveness for ISC and ISM",
    author = "Peter {Sauer}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832457907",
    url = "https://m.diplom.de/document/221259"
}