@book { ASurveyonRequirementsElicitation,
    title = "A Survey on Requirements Elicitation",
    author = "Martin {Fehrenbach}",
    year = "1999",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832415181",
    url = "https://m.diplom.de/document/217363"
}